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Huang, Sung‐Hsi; Huang, Chung‐Hao; Wang, Ning‐Chi; Chen, Tun‐Chieh; Lee, Yuan‐Ti; Lin, Shih‐Ping; Lin, Te‐Yu; Lin, Chi‐Ying; Lee, Yu‐Lin; Lee, Chen‐Hsiang; Chen, Cheng‐Pin; Lin, Kuan‐Yin; Chen, Guan‐Jhou; Liu, Chun‐Eng; Cheng, Shu‐Hsing; Lu, Po‐Liang; Yang, Chia‐Jui; Hung, Chien‐Ching
Hepatology (Baltimore, Md.), August 2019, Volume: 70, Issue: 2Journal Article
Serological responses (Seroresponse) and durability of hepatitis A virus (HAV) vaccination are reduced among human immunodeficiency virus (HIV)‐positive patients. Incidence of and associated factors with early seroreversion (loss of seroresponse) among HIV‐positive patients who have achieved seroresponses after two doses of HAV vaccination remain unclear. In this multicenter study, we followed HIV‐positive adults who had mounted seroresponses after completing two doses of HAV vaccination during a recent outbreak of acute hepatitis A between 2015 and 2017, a 1:4 case‐control study was conducted to identify factors associated with seroreversion. Case patients were those with seroreversion, and controls were those with similar follow‐up durations who were able to maintain seroresponses. During the study period, 49 of the 1,256 patients (3.9%) seroreverted after a median follow‐up of 611 days. In a case‐control study, seroreversion was more likely to occur in patients with a higher weight (adjusted odds ratio aOR, 1.703; 95% confidence interval CI, 1.292‐2.323, per 10‐kg increment) and HIV viremia at the time of vaccination (aOR, 2.922; 95% CI, 1.067‐7.924), whereas positive seroresponse at 6 months of HAV vaccination and higher CD4 lymphocyte counts at vaccination were inversely associated with early seroreversion with an aOR of 0.059 (95% CI, 0.020‐0.154) and 0.837 (95% CI, 0.704‐0.979, per 100‐cell/mm3 increment), respectively, in multivariable analyses. Conclusion: During an outbreak setting, early seroreversion following two‐dose HAV vaccination occurred in 3.9% of HIV‐positive patients. Lower and delayed seroresponses to HAV vaccination, a higher weight, and HIV viremia and lower CD4 lymphocyte counts at the time of HAV vaccination were associated with early seroreversion. Regular monitoring of seroresponse and booster vaccination might be warranted, especially in HIV‐positive adults with predictors of early seroreversion.
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