Research article
Open Access
Assessment of knowledge, attitudes and practices toward prevention of hepatitis B virus infection among students of medicine and health sciences in Northwest Ethiopia
Received: 4 December 2015
Accepted: 12 August 2016
Published: 19 August 2016
Abstract
Background
Hepatitis B virus (HBV) infection in the health setting is a global public health problem. The risk of occupational exposure to HBV among health care workers is a major concern, especially among students in health professions. In Ethiopia, very little is known about the knowledge, attitude, and practices (KAP) of trainees in the health professions towards occupational risk of HBV. Thus, the aim of this study was to assess the level of KAP of medicine and health Sciences students in Northwest Ethiopia towards occupational risk of HBV infection.
Methods
A cross-sectional study was conducted from February 2015 to June 2015. A total of 246 students of health care professions were included into the study using a systematic random sampling technique. Data were collected using self-administered structured questionnaire and analysed by using SPSS version 20.
Results
Majority of the study participants, (>80 %) had an adequate knowledge on risk factors for HBV, its mode of transmissions, and preventions. Two hundred of 246 (83.3 %) participants had positive attitude towards following infection control guidelines, and 201 (81.7 %) respondents believe that all HCWs should take HBV vaccine. However, only 5 (2 %) students had completed the three doses schedule of HBV vaccination. Whereas, a significant number of students, 66 (26.8 %), had been exposed to blood/body fluid via needle stick injury at least once since they started their training in the health facility.
Conclusions
Our study found that trainees in health profession are at a very high risk of contracting HBV infection during their training owing to the low HBV vaccine uptake rate and high rate of accidental exposure to blood. Thus, we recommend that all students in the health profession should be vaccinated prior to their entry into professional practices.
Keywords
Hepatitis B Knowledge Attitude Occupational exposure Health science students Northwest EthiopiaBackground
Hepatitis B virus (HBV) infection is one of the major public health problems in the world. According to the recent estimates, about one-third of the world population is infected with HBV [1, 2]. Of these, about 360 million people are chronic carriers and are at risk of developing liver diseases like cirrhosis and hepatocellular carcinoma (HCC). The prevalence of chronic HBV infection greatly varies worldwide (0.5–20 %), due to differences in age at the time of infection and mode of acquisition. A disproportionately high prevalence of chronic HBV infections exists in Southeast Asian and sub-Sahara African countries [3–5].
Health care workers (HCWs) are at high risk of HBV infection in the health care settings. The prevalence rate of HBV in HCWs is about 2–10 times higher than the general populations in the world [6, 7]. In context of HCWs, the risk factors for HBV infection are percutaneous or mucosal exposure to infected blood or body fluids, using inadequately sterilized medical equipment or contact with non-intact skin [7]. The average risk for acquiring HBV infection after percutaneous exposure to infected blood has been estimated to be 6–30 %; whereas it is about 0.3 % for human immunodeficiency virus [8].
The risk of occupational exposure to HBV infection is highly prevalent among HCWs in developing countries, where the prevalence of HBV is high in general population, and the health settings are poor [9–12]. A cross-sectional study conducted in Ethiopia, for instance, showed that 7.3 % of HCWs were infected with HBV while only 0.9 % of non-HCWs who participated in the study were infected [11]. Other studies conducted among medical waste handlers and blood donors in Ethiopia revealed an HBV infection rate of about 6 and 2.1 % respectively [12, 13]. The higher risk of HBV infection among HCWs in developing countries could be attributed to the prevailing careless handling of contaminated objects, reuses of inadequately sterilized medical equipment, and an improper waste disposal system [14, 15].
Apart from the HCWs, trainees in the health care professions are also exposed to an equal magnitude of occupational risk of HBV, as they work in the same health care delivery system. In fact, the risk for accidental exposure among the trainees could be higher due to their lack of experience, insufficient training, duty overload, and fatigue [16, 17].
Hepatitis B virus infection can be prevented by adhering to universal precautions including the use of protective barriers like gloves, proper sterilization of medical equipment, proper hospital wastes management system and vaccination [18–21]. Moreover, post-exposure prophylaxis can be used as a means of HBV prevention after accidental exposure to contaminated blood or body fluids [18–20]. However, studies have indicated that there is a clear gap of knowledge among trainees of health profession towards the risks of occupational exposure to HBV infection. A study from Lao democratic People’s Republic (Lao DPR), for example, has indicated that 86.5 % of medical students had poor knowledge on modes of HBV transmission and risk perception [22]. A similar study from Cameroon has indicated poor practice among the study participants, with only 10 % vaccination rate against HBV, and 55.9 % accidental exposure to blood [23].
Knowledge, attitude, and practices study measures key knowledge, feelings, tendencies, or skills commonly shared by a community on particular issues. It has been used as a useful study tool to design public health policies by taking into account the awareness, beliefs, and health seeking behavior of the at-risk population. In Ethiopia, data regarding knowledge, as well as attitude and practice towards the occupational exposure to HBV among the students of health care professions is scarce, albeit the high prevalence of the infection in the general population [24–26]. Therefore, the aim of this study was to assess the KAP of the students of medicine and health sciences towards HBV in Northwest Ethiopia.
Methods
Study site and population
This study was conducted at the college of medicine and health sciences, University of Gondar. The university is located in North Gondar Zone of the Amhara regional state, Northwest Ethiopia. The College of medicine and health sciences is one of the oldest medical education institutions in the country. It has a teaching hospital, and different schools including the school of medicine, pharmacy, biomedical and laboratory sciences, institutes of public health, and various departments. Most of the health care profession students receive 4 years training except for the students of medicine (6 years) and Pharmacy (5 years). The study population was students of medicine and health sciences who had clinical attachments for a minimum of about 2 years.
Study design and period
A cross-sectional study was conducted to assess KAP of the fifth year medical and fourth year health science students toward prevention of HBV infection. The study was conducted from February 2015 to June 2015.
Definitions for scoring knowledge, attitude and practices
The following operational definitions were used in this study. Good knowledge: if the respondents were able to answer 70 % or more of knowledge items correctly. Poor knowledge: if the respondents answered less than 70 % of knowledge items. Positive attitude: if the respondents were are able to give the correct answer for 70 % or more of attitude items. Negative attitude: if the respondents answered less than 70 % of attitude items. Good practice: when the study participants were at least able to answer 70 % or more practice items correctly. Malpractice: when the participants were unable to answer 70 % of practice items correctly.
Sample size determination
A single population proportion formula was used to estimate sample size. Since there was no similar study from Ethiopia, the following assumptions have been made: 95 % confidence interval (Zα/2 = 1.96), 50 % proportion, and 5 % margin of error.
$${\text{N}} = \frac{{(Z_{\alpha{/}2}) \times {\text{XP}}(1 - {\text{P}})}}{{d^{2} }},\quad {\text{N}} = \frac{{(1.96^{2} ) \times 0.5(1 - 0.5)}}{{(0.05)^{2} }} = 384$$
However, since the number of source population for the study was 535, which was less than 10,000, we used the following correction formula [27]: where nf = corrected sample size, ni = uncorrected sample size, and N = total number of all the source population.
$${\text{nf}} = {\text{ni}} / (1+{\text{ni/N}}), \quad {\text{nf}} = 384/1 + (384/535) = 223.55;$$
By adding 10 % non-response rate, we included a total of 246 study subjects. The total sample size was distributed proportionally to each department based on their student population. The study participants were selected by a random sampling technique.
Study variables
Knowledge, attitude, and practice of the study participants towards HBV transmission and prevention were considered as dependent variables; and sex, age, residence areas, and departments of the study population were considered as the independent variables.
Data collection
A self-administered structured questionnaire was used to collect information about the socio-demographic characteristics of respondents, KAP towards transmission and prevention of HBV infection (see an Additional file 1).
Statistical analysis
Data were entered, cleaned and analyzed using SPSS version 20 statistical package software (SPSS Inc., Chicago, IL). Descriptive statistics like frequencies and proportions were used to summarize the data. Bivariate and multivariate analyses were used to examine the relationship between the outcome variables (mean knowledge, attitude, and practice) and selected socio-demographic factors. Adjusted odds ratios (AOR) and their 95 % confidence intervals (CIs) were used as indicators of the strength of association. Statistical significance was set at P values of less than 0.05.
Results
Characteristics of the study participants
A total of 246 students belonging to nine departments were approached for the study. All of them were participated in the study making a response rate of 100 %. The majority of the students 217 (88.2 %) were in the age group of 20–24 years and 187 (76 %) were male. A little more than half 144 (58.5 %) of the participants were from urban areas (Table 1).
Table 1
Baseline characteristics of the study participants at the college of medicine and health sciences, University of Gondar, Northwest Ethiopia
Variables | N (%) |
|---|---|
Gender | |
Male | 187 (76) |
Female | 59 (24) |
Age | |
20–24 | 217 (88.2) |
25–29 | 29 (11.8) |
Department | |
Medicine | 74 (30.1) |
MLT | 17 (6.9) |
PHO | 35 (14.2) |
Physiotherapy | 11 (4.5) |
Nurse | 34 (13.8) |
Midwifery | 33 (13.4) |
Anaesthesia | 12 (4.9) |
Optometry | 11 (4.5) |
Psychiatry | 19 (7.7) |
Residence | |
Rural | 102 (41.5) |
Urban | 144 (58.5) |
Knowledge level of the respondents on HBV
Overall, most of the study participants had adequate knowledge on HBV infection and its mode of transmission. Of the students surveyed, 200 (81.3 %) knew that HBV infection associate with liver cancer. Regarding the mode of transmission, 239 (97.2 %) reported contact with blood or body fluid of HBV carriers, 238 (96.7 %) mentioned unsterilized medical equipment such as needle and syringes, and 207 (84.1 %) answered unsafe sexual contact (Table 2). In terms of knowledge on vaccination, 84.6 % of the respondents were aware of HBV vaccine and that it provides protection against HBV infection. However, relatively a low proportion (67.1 %) of study participants knew that HBV has a post-exposure prophylaxis and that it can be treated/or cured (52.4 %).
Table 2
Knowledge level of the students at the college of medicine and health science, University of Gondar, 2015
Hepatitis B knowledge questions | Yes n (%) | No n (%) | Not sure n (%) |
|---|---|---|---|
HBV causes liver cancer | 200 (81.3) | 10 (4.1) | 36 (14.6) |
HBV carriers can transmit the infection | 235 (95.5) | 4 (1.6) | 7 (2.8) |
HBV spread by casual contact such as hand shacking | 153 (62.2) | 79 (32.1) | 14 (5.7) |
HBV spread by contact with open wounds/cut? | 230 (93.5) | 9 (3.7) | 7 (2.8) |
HBV can be transmitted by contaminated blood and body fluids | 239 (97.2) | 7 (2.8) | 00 (0.0) |
HBV can be transmitted by unsterilized syringes, needles and surgical instruments | 238 (96.7) | 8 (3.3) | 00 (0.0) |
Hepatitis B transmitted by unsafe sex | 207 (84.1) | 39 (15.9) | 00 (0.0) |
Vaccine can prevent hepatitis B infection | 208 (84.6) | 19 (7.7) | 19 (7.7) |
Do you think HBV has laboratory test? | 238 (96.7) | 8 (3.3) | 00 (0.0) |
HBV has post exposure prophylaxis | 165 (67.1) | 81 (32.9) | 00 (0.0) |
Hepatitis B can be cured/treated | 129 (52.4) | 117 (47.6) | 00 (0.0) |
Attitudes towards HBV infection and risk perception
The attitudes of students of medicine and health sciences towards HBV infection are summarized in Table 3. About 77 % of the students were aware that they are at-risk for HBV infection, and 83.3 % agreed that following infection control guidelines would protect them from being infected at work. Further, 81.7 % of the students acknowledged that vaccine against HBV prevents getting the infection.
Table 3
Attitudes of the students of medicine and health sciences towards hepatitis B prevention, University of Gondar
Attitude questions | Agree N (%) | Disagree N (%) | Not sure N (%) |
|---|---|---|---|
I have no concern of being infected with HBV | 31 (12.6) | 190 (77.2) | 25 (10.2) |
Hepatitis B vaccine is safe and effective | 201 (81.7) | 24 (9.8) | 21 (8.5) |
Changing of gloves during blood collection and tests is waste of time | 14 (5.7) | 223 (90.7) | 9 (3.7) |
All patients should be tested for HBV before they receive health care | 137 (55.7) | 91 (37.0) | 18 (7.3) |
I do not feel comfortable to take care of people with HBV | 27 (11.0) | 202 (82.1) | 17 (6.9) |
Following infection control guidelines will protect from being infected with HBV at work? | 205 (83.3) | 33 (13.4) | 8 (3.3) |
To assess their attitudes toward discrimination and stigma on HBV carriers, we asked whether they are comfortable in treating HBV patients. About 82 % (202/246) of the students had responded in agreement to the inquiry. On the other hand, 55.7 % of the students think that all patients need to be tested before receiving any health care services.
Multivariate analysis of the knowledge of trainees in the health care profession revealed that of those trainees at higher risk of HBV infection, students of nursing (AOR5.87, 95 % CI 1.05–32.88), midwifery (AOR 2.02, 95 % CI 0.26–15.21) and anesthesia (AOR 2.93, 95 % CI 0.24–35.99) had lower knowledge on HBV compared to the students of medicine. Further, of the at-risk groups, students of nursing (95 % CI 4.70–34.11), midwifery (95 % CI 4.51–33.68), and anesthesia (95 % CI 1.25–16.94) showed unfavorable attitude towards HBV prevention with the odds of 12.67, 12.32 and 4.61 respectively (Table 4).
Table 4
Multivariate analysis of factors associated with poor knowledge and attitudes towards hepatitis B prevention among medicine and health Science students at the University of Gondar, 2015
Variables | Knowledge | AOR (95 % CI) | P value | Attitude | AOR (95 % CI) | P value | ||
|---|---|---|---|---|---|---|---|---|
Good | Poor | Favorable | Not | |||||
Sex | ||||||||
Male | 160 (85.6) | 27 (14.4) | 1.3 (0.5–3.8) | 0.59 | 104 (55.6) | 83 (44.4) | 1.3 (0.6–2.7) | 0.51 |
Female | 52 (88.1) | 7 (11.9) | 1.0 | – | 30 (50.8) | 29 (49.2) | 1.0 | |
Age | ||||||||
20–24 | 185 (85.3) | 32 (14.7) | 3.8 (0.6–23.3) | 0.14 | 115 (53.0) | 102 (47.0) | 1.5 (0.5–3.9) | 0.45 |
25–29 | 27 (93.1) | 2 (6.9) | 1.0 | – | 19 (65.5) | 10 (34.5) | 1.0 | – |
Residence | ||||||||
Rural | 86 (84.3) | 16 (15.7) | 1.2 (0.5–2.7) | 0.71 | 54 (52.9) | 48 (47.1) | 0.8 (0.4–1.4) | 0.41 |
Urban | 126 (87.5) | 18 (12.5) | 1.0 | – | 80 (55.6) | 64 (44.4) | 1.0 | – |
Profession | ||||||||
Medicine | 72 (97.3) | 2 (2.7) | 1.0 | – | 60 (81.1) | 14 (18.9) | 1.0 | – |
MLT | 17 (100) | 0 (0.0) | 0.0 | 0.99 | 10 (58.8) | 7 (41.2) | 2.7 (0.9–8.5) | 0.09 |
PHO | 26 (74.3) | 9 (25.7) | 10.9 (2.2–55.2) | 0.00 | 27 (77.1) | 8 (22.9) | 1.3 (0.5–3.5) | 0.63 |
Nursing | 29 (85.3) | 5 (14.7) | 5.87 (1.1–32.9) | 0.04 | 9 (26.5) | 25 (73.5) | 12.7 (4.7–34.1) | 0.00 |
Midwifery | 31 (93.9) | 2 (6.1) | 2.02 (0.3–15.5) | 0.49 | 9 (27.3) | 24 (72.7) | 12.3 (4.5–33.7) | 0.00 |
Anaesthesia | 11 (91.7) | 1 (8.3) | 2.93 (0.2–36.0) | 0.40 | 6 (50.0) | 6 (50.0) | 4.6 (1.3–16.9) | 0.02 |
Physiotherapy | 8 (72.8) | 3 (27.3) | 11.6 (1.7–82.2) | 0.01 | 3 (27.3) | 8 (72.7) | 11.6 (2.7–50.3) | 0.00 |
Optometry | 4 (36.4) | 7 (63.6) | 81.7 (11.4–585) | 0.00 | 2 (18.2) | 9 (81.8) | 22.5 (4.2–122.3) | 0.00 |
Psychiatry | 14 (73.7) | 5 (26.3) | 11.0 (1.9–63.4) | 0.01 | 8 (42.1) | 11 (57.9) | 5.4 (1.8–16.1) | 0.00 |
Overall | 212 (86.2) | 34 (13.8) | – | – | 134 (54.5) | 112 (45.5) | – | – |
Practical measures for HBV prevention and Health seeking behavior
Of the 246 participants, only 23 (9.3 %) had screened for HBV, 12 (4.9 %) students had vaccinated against HBV, and only 5 (2 %) of vaccinated students had completed the recommended three doses. About 27 % of the respondents had a needle stick injury, and 53.7 % of the participants had responded that they would report if they had needle stick injury (Table 5). Overall, there were poor practical measures on prevention of HBV infection among the study subjects.
Table 5
Practices of medicine and health sciences students towards hepatitis B prevention at the University of Gondar hospital, 2015
HBV practice questions | Yes number (%) | No number (%) |
|---|---|---|
Have you ever screened for hepatitis B? | 23 (9.3) | 223 (90.7) |
Have you got vaccinated against HBV? | 12 (4.9) | 234 (95.1) |
How many doses of HBV vaccine did you receive? | ||
One dose | 6 (2.4) | – |
Two doses | 1 (0.4) | – |
Three doses | 5 (2.0) | – |
I always change gloves for each patient during blood taking | 209 (85.0) | 37 (15.0) |
Have you ever had a needle prick injury? | 66 (26.8) | 180 (73.2) |
I always report for needle stick injury | 132 (53.7) | 114 (46.3) |
Discussions
Exposure to blood-borne pathogens such as HBV infection remains a significant occupational hazard to HCWs, especially in countries where this infection is highly prevalent. KAP surveys have been used as important sources of data to design health intervention methods and public health policies. In Ethiopia, there is a paucity of data regarding the knowledge and practices towards occupational hazard of HBV among trainees in the health profession. The current study describes the KAP towards HBV infection among medical and health science students at the University of Gondar.
Despite the wide professional background of the study participants, our results showed that overall knowledge regarding HBV, its mode of transmission and prevention was high (86.2 %). Most respondents knew that exposure to infected blood or body fluid, contaminated needles, contact with non-intact skin or unsafe sexual contacts are risk factors for HBV infection. This finding was consistent with the previous study from Cameroon that reported a good knowledge of the study participants on HBV infection [23]. But, it was higher than the 56.2 % knowledge levels at Haramaya University, Ethiopia [24], 59 % from Iraq [28] and 14.5 % from Lao DPR [22]. Nevertheless, we found that relatively lower proportion of the students knew that HBV has treatments (52.4 %) and post-exposure prophylaxis (67.1 %). This indicating that there is a need to alleviate the gaps as these might affect seeking medical attention.
In this study, the overall attitude towards HBV prevention among the participants was favorable. More than 75 % of the participants were aware that they are at risk of contracting HBV and believe that HBV vaccine is effective and safe. This finding was in line with the report from Saudi Arabia among dentists [29]. Our study revealed that most of the study participants had malpractice towards HBV prevention, in spite of their good knowledge and positive attitude on the disease and its prevention measures. Risky practices among the study participants were highly prevalent, with 28.6 % of them had exposed to blood accidentally; and 46.3 % had no intension to report the accident. This finding suggesting that there is a need to address the gap by strengthening health education on universal safety precaution for prevention of infections. Yet, when compared with the reports from other countries, the finding 28.6 % rate of accidental exposure to blood was lower than the 55.9 % rate reported from Cameroon [23], 48 % from Nigeria [30], and 40 % from Palestine [31].
In terms of vaccination against HBV, WHO recommends the preventive vaccine to all HCWs in countries with high HBV endemicity. However, this study revealed the least vaccine acceptance rate (2 %) among the study participants compared to a number of similar studies [22, 23, 32]. The low HBV vaccine acceptance rate among the study participants might be partly ascribed to the inaccessibility of HBV vaccine as it was included into the Ethiopian immunization program in 2007.
This study has a limitation in that we could not confirm the information regarding HBV vaccination as the study participants came from different parts of the country. The data was obtained by questionnaire, and therefore, there could be a recall bias of the participants. Despite the limitations, the findings of this study highlighted that there is a critical need for immunizing trainees in health profession against this highly contagious pathogen.
Conclusions
Our data demonstrated that trainees in health profession are at a very high risk of contracting HBV infection during their training owing to low HBV vaccine uptake rate and high rate of accidental exposure to blood. Thus, we recommend that all students in the health care profession should be vaccinated prior to their entry into professional practices.
Abbreviations
- KAP:
-
knowledge, attitude, and practices
- HBV:
-
hepatitis B virus
- HCC:
-
hepatocellular carcinoma
- HCW:
-
health care workers
- AOR:
-
adjusted odds ratios
- CI:
-
confidence intervals
- MLT:
-
medical laboratory technologists
- PHO:
-
public health officer
Declarations
Authors’ contributions
AA, BW, KH study designing, data collection, entry and cleaning; TD designed the study, data collection, data cleaning, data analysis, interpretation and wrote the manuscript; BM assisted in the study design, data collection, entry, cleaning and data analysis. All authors read and approved the final manuscript.
Acknowledgements
We would like to acknowledge the Gondar University Teaching Hospital staffs and the study participants for their unreserved support during data collection.
Competing interests
The authors declare that they have no competing interests.
Availability of data and materials
A questionnaire used in this study to collect data on knowledge, attitude and practices of trainees in the health care profession towards HBV is available as an additional file.
Ethics approval and consent to participate
Ethical approval was obtained from research and Ethical Review Committee of the School of Biomedical and Laboratory Science, University of Gondar. After explaining the importance of the study, each study participants gave an informed written consent to take part in the study.
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Authors’ Affiliations
(1)
College of Medicine and Health Sciences, School of Biomedical and Laboratory Sciences, University of Gondar
References
- World health organization. WHO hepatitis B.htm. WHO, Geneva.http://www.whohepatitisB.htm. Accessed on 22 June 2015.
- Thio CL. Hepatitis B and human immunodeficiency virus coinfection. Hepatology. 2009;49:S138–45.View ArticlePubMedGoogle Scholar
- Liaw YF, Brunetto MR, Hadziyannis S. The natural history of chronic HBV infection and geographical differences. Antivir Ther. 2010;15(Suppl 3):25–33.View ArticlePubMedGoogle Scholar
- Andre F. Hepatitis B epidemiology in Asia, the Middle East and Africa. Vaccine. 2000;18(1):S20–2.View ArticlePubMedGoogle Scholar
- Taye S, Abdulkerim A, Hussen M. Prevalence of HBV and HCV infection among patients with chronic hepatitis at Bereka medical center, South East Ethoipia. BMC Res Notes. 2014;7:272.View ArticlePubMedPubMed CentralGoogle Scholar
- West DJ. The risk of hepatitis B infection among health professionals in the United States: a review. Am J Med Sci. 1984;287(2):26–33.View ArticlePubMedGoogle Scholar
- Hadler SC. Hepatitis B virus infection and health care workers. Vaccine. 1990;8(Suppl. (1)):S24–8.View ArticlePubMedGoogle Scholar
- Beltrami EM, Williams IT, Shapiro CN, Chamberland ME. Risk and management of blood-borne infections in health care workers. Clin Microbiol Rev. 2000;13(3):385–407.View ArticlePubMedPubMed CentralGoogle Scholar
- Ayele AG, Gebre-Selassie S. Prevalence and risk factors of hepatitis B and hepatitis C virus infections among patients with chronic liver diseases in public hospitals in Addis Ababa, Ethiopia. ISRN Trop Med. 2013. doi:https://doi.org/10.1155/2013/563821.Google Scholar
- Wondimeneh Y, Alem M, Asfaw F, Belyhun Y. HBV and HCV seroprevalence and their correlation with CD4 cells and liver enzymes among HIV positive individuals at University of Gondar Teaching Hospital, Northwest Ethiopia. Virol J. 2013;10:171. doi:https://doi.org/10.1186/1743-422X-10-171.View ArticlePubMedPubMed CentralGoogle Scholar
- Geberemicheal A, Gelaw A, Moges F, Dagnew M. Seroprevalence of hepatitis B virus infections among health care workers at the Bulle Hora Woreda Governmental Health Institutions, Southern Oromia, Ethiopia. J Environ Occup Sci. 2013;2(1):9–14.Google Scholar
- Anagaw B, Shiferaw Y, Anagaw B, Belyhun Y, Erku W, Fantahun F, et al. Seroprevalence of hepatitis B and C viruses among medical waste handlers at Gondar town Health institutions, Northwest Ethiopia. BMC Res Notes. 2012;5:55.View ArticlePubMedPubMed CentralGoogle Scholar
- Yami A, Alemseged F, Hassen A. Hepatitis B and C viruses infections and their association with Human Immunodeficiency virus: a cross-sectional study among blood donors in Ethiopia. Ethiop J Health Sci. 2011;21(1):67–75.View ArticlePubMedPubMed CentralGoogle Scholar
- Prüss-Üstün A, Rapiti E, Hutin Y. Estimation of the global burden of disease attributable to contaminated sharps injuries among health-care workers. Am J Ind Med. 2005;48(6):482–90.View ArticlePubMedGoogle Scholar
- Taneja N, Biswal M. Safe disposal of infectious waste. Indian perspective. J Hosp Infect. 2009;62(4):525–6.View ArticleGoogle Scholar
- Rogers B, Goodno L. Evaluation of interventions to prevent needle stick injuries in health care occupations. Am J Prev Med. 2000;18(4):90–8.View ArticlePubMedGoogle Scholar
- Kohn WG, Collins AS, Cleveland JL, Cleveland JL, Harte JA, Eklund KJ, Malvitz DM. Guidelines for infection control in dental health-care settings–2003. MMWR Recomm Rep. 2003;52((RR-17)):1–61.PubMedGoogle Scholar
- Rachiotis G, Goritsas C, Alikakou V, Ferti A, Roumeliotou A. Vaccination against hepatitis B virus in workers of a general hospital in Athens. Med Lav. 2005;96(1):80–6.PubMedGoogle Scholar
- Molinari J. Infection control. Its evolution to the current standard precautions. J Am Dent Assoc. 2003;134(5):569–74.View ArticlePubMedGoogle Scholar
- World Health Organization. Health Care Worker Safety. http://www.who.int/occupational_health/activities/1am_hcw.pdf. Accessed 20 Oct 2015.
- Hutin Y, Hauri A, Chiarello L, Catlin M, Stilwell B, Ghebrehiwet T, et al. Best infection control practices for intradermal, subcutaneous, and intramuscular needle injections. Bull World Health Organ. 2003;7:491–500.Google Scholar
- Pathoumthonga K, Khampanisonga P, Quetb F, Latthaphasavang V, Souvong V, Buisson Y. Vaccination status, knowledge and awareness towards hepatitis B among students of health professions in Vientiane. Lao PDR. Vaccine. 2014;32:4993–9.View ArticleGoogle Scholar
- Noubiap JJ, Nansseu JR, Kengne KK, Ndoula ST, Agyingi LA. Occupational exposure to blood, hepatitis B vaccine knowledge and uptake among medical students in Cameroon. BMC Med Educ. 2013;13:148.View ArticlePubMedPubMed CentralGoogle Scholar
- Mesfin YM, Kibret KT. Assessment of knowledge and practice towards hepatitis B among medical and health science students in Haramaya University, Ethiopia. PLoS ONE. 2013;8(11):79642.View ArticleGoogle Scholar
- Abebe A, Nokes D, Dejene A, Enquselassie F, Mesele T, Cutts F. Sero-epidemiology of hepatitis B in Addis Ababa, Ethiopia, transmission patterns and vaccine control. Epidemiol Infect. 2003;131:757–70.View ArticlePubMedPubMed CentralGoogle Scholar
- Abeje G, Azage M. Hepatitis B vaccine knowledge and vaccination status among health care workers of Bahir Dar City administration, Northwest Ethiopia: a cross sectional study. BMC Infect Dis. 2015;31:15–30.Google Scholar
- Thrusfield M. Veterinary epidemiology. London: Blackwell Science; 1995.Google Scholar
- Othman SM, Saleh AM, Shabila NP. Knowledge about hepatitis B infection among medical students in Erbil city, Iraq. Europ Sci J. 2013;3:1857–7881.Google Scholar
- Al-Hazmi AH. Knowledge, attitudes and practice of dentists concerning the occupational risks of hepatitis B virus in Al Jouf Province, Saudi Arabia. Niger J Clin Pract. 2015;18:276–81.View ArticlePubMedGoogle Scholar
- Okeke EN, Ladep NG, Agaba EI, Malu AO. Hepatitis B vaccination status and needle stick injuries among medical students in a Nigerian University. Niger J Med. 2008;17(3):330–2.View ArticlePubMedGoogle Scholar
- Al-Dabbas M, Abu-Rmeileh NM. Needle stick injury among interns and medical students in the occupied Palestine territory. East Mediterr Health J. 2012;18(7):700–6.PubMedGoogle Scholar
- Mansour-Ghanaei R, Joukar F, Souti F, et al. Knowledge and attitude of medical science students towards hepatitis B and hepatitis C infection. Int J Clin Exp Med. 2013;3:197–205.Google Scholar
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