Intestinal Antibody Responses to 2 Novel Live Attenuated Type 2 Oral Poliovirus Vaccines in Healthy Adults in Belgium.

Elizabeth B Brickley

; Ruth I Connor ; Wendy Wieland-Alter ; Joshua A Weiner ; Margaret E Ackerman ; Minetaro Arita ; Chris Gast ; Ilse De Coster ; Pierre Van Damme ; Ananda S Bandyopadhyay ; +1 more... Peter F Wright ; (2020) Intestinal Antibody Responses to 2 Novel Live Attenuated Type 2 Oral Poliovirus Vaccines in Healthy Adults in Belgium. The Journal of infectious diseases, 226 (2). pp. 287-291. ISSN 0022-1899 DOI: 10.1093/infdis/jiaa783

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In a blinded phase 1 trial (EudraCT 2017-0000908-21; NCT03430349) in Belgium, healthy adults (aged 18-50 years) previously immunized exclusively with inactivated poliovirus vaccine were administered a single dose of 1 of 2 novel type 2 oral poliovirus vaccines (nOPV2-c1: S2/cre5/S15domV/rec1/hifi3 (n = 15); nOPV2-c2: S2/S15domV/CpG40 (n = 15)) and isolated for 28 days in a purpose-built containment facility. Using stool samples collected near days 0, 14, 21, and 28, we evaluated intestinal neutralization and immunoglobulin A responses to the nOPV2s and found that nOPV2-c1 and nOPV2-c2 induced detectable poliovirus type 2-specific intestinal neutralizing responses in 40.0% and 46.7% of participants, respectively.