Which of the following is not a type of VDPV?
Vaccine derived polio virus ( VDPV) ard divided in to 3 categories. cVDPV- when evidence of person to person transmission exists in community. iVDPV- Immuno deficient associated VDPV, which are isolates from persons with primary immunodeficiency, who have prolonged VDPV infections. aVDPV- Ambiguous VDPV,which are either clinical isolates from person with no known immunodeficiency or sewage isolates whose source is unknown. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg, 219
mVDPV
aVDPV
iVDPV
cVDPV
Communicable diseases