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Related to TOPV: BCG, BOPV
TOPVTrivalent Oral Polio Vaccine
References in periodicals archive ?
Director EPI Dr Munir Ahmed said: The TOPV vaccine includes all 3 types of polio virus.
17-19) Although the risk of paralytic polio from the vaccine virus is 10 000 times less than for wild-type virus, 1 in 2 million for vaccine virus as against 1 in 200 for wild-type virus, it was this minute risk of vaccine-associated paralytic poliomyelitis (VAPP) that motivated most countries in the developed world to switch from TOPV to TIPV for routine immunisation.
The TOPV to BOPV switch will occur on 25th April 2016 and the objective is to remove the P2 virus from the world, even from the vaccine.