TOPV


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Related to TOPV: BCG, BOPV

TOPV

 
poliovirus vaccine live oral trivalent.
References in periodicals archive ?
A search of the database revealed that OPVs spread through the nasopharynx which is detected by serum neutralization from patients with acute respiratory infections.[sup][5] Notably, an epidemiological investigation found that an infant had similar respiratory clinical symptoms after each dose of tOPV. Thus, these reports, along with the case in this study, support the causal relationship between the Type 2 polio vaccine and pneumonia.
Munir further said that BOPV will be used in polio campaign from 25th April in 15 districts and monitoring teams from the provincial office will inspect the district and tehsil store to ensure no vial of TOPV is available anywhere in the province.
TOPV will exchanged for BOPV at DO (H) Office and no single dose or vial of TOPV must be left at vaccination site.
The basic layer configuration of TOPV follows that in our previous report, comprising a glass substrate/Ag-Ag[O.sub.x] (100 nm)/PEDOT:PSS (0 to 7000 rpm)/copper phthalocyanine (CuPc 20 nm)/fullerene ([C.sub.60] 40nm)/BCP (7nm)/ Ag (12.5 nm)/naphthylphenylbiphenyldiamine (NPB 40 nm) [25], where CuPc is electron donor layer, [C.sub.60] is electron acceptor layer, BCP is exciton block layer to prevent the cathodic quenching, and NPB is capping layer to have more incident photons.
When eradication finally arrives, most countries in the world which are TOPV users will have the option of either going 'cold turkey' or switching to TIPV.
As 15-18 doses of tOPV or 5-6 doses of mOPV-1 or 3 were needed to immunize near 100 per cent children, its speed necessarily lagged behind that of wild virus transmission (1,2,6,8).
The type 2 component of trivalent OPV (tOPV) (containing vaccine virus types 1, 2, and 3) was responsible for >90% of cVDPV cases occurring during 2006-2015 (5-7).
These special immunization weeks in April, June, July and August are aimed at protecting the vulnerable populations with all vaccines available under routine immunisation, including tOPV. Of the 411,129 high risk areas, 82,965 are in Maharashtra.
Children usually receive trivalent oral polio vaccine (tOPV) types 1, 2, and 3, at birth and at ages 6, 10, and 14 weeks during the routine immunization (RI) sessions.
After the emergence of multiple cVDPV2 outbreaks during the preceding 15 years, in April 2016, all OPV-using countries switched from using trivalent OPV (tOPV; Sabin types 1, 2, and 3) to bivalent OPV (bOPV; Sabin types 1 and 3).
After the global certification of WPV2 eradication in 2015, the type 2 vaccine component was synchronously withdrawn from use worldwide in May 2016 by switching from trivalent oral poliovirus vaccine (tOPV, containing vaccine virus types 1, 2, and 3) to bivalent OPV (bOPV, containing types 1 and 3).