Table 2 Hepatitis A virus (HAV) immunity among students
Characteristics | Vaccination records | P-value | |
|---|---|---|---|
Available (n = 66) | Unavailable (n = 110) | ||
Overall HAV immunity | 66.7% (44/66) | 50.9% (56/110) | 0.028 |
Overall HAV nonimmunity | 33.3% (22/66) | 49.1% (54/110) | |
HAV immunity among those who received two HAV injections | 97.5% (39/40) | – | |
HAV immunity among those who received one HAV injection | 100% (3/3) | ||
Natural HAV immunity among the unvaccinated | 8.7% (2/23) | ||
Time from the first HAV injection to anti-HAV IgG testing | 15.55 ± 2.44 years | ||