Inactivated polio vaccines, which have been used in many countries for more than 50 years, are produced by treating live poliovirus (PV) with formaldehyde. However, the molecular mechanisms underlying virus inactivation are not well understood. Infection by PV is initiated by virus binding to specific cell receptors, which results in viral particles undergoing sequential conformational changes ...

an interference is observed between whooping-cough antigens and salk polioc vaccine even if the two components are mixed immediately before use. the phenomenon is more evident when flulid antigens are injected. pertussis soluble antigen, which gives a good serological response in rabbits, when used alone or combined with dt, is inactivated in the presence of salk polio vacc:ne

(WHO) is contemplating discontinuing the use of an oral polio vaccine that’s been linked to ongoing outbreaks of the virus in the developing world. WHO is weighing the possibility of using a different formulation of the vaccine, but maintains that patchy implementation of immunization programs, not the vaccine itself, is to blame for the outbreaks. Since 2000, some two billion children have rec...

The present article reports a case involving an immunocompetent, previously well child who, despite two previous doses of inactivated poliovirus vaccine, developed severe flaccid paralysis consistent with polio after receiving oral polio vaccine.

In anticipation of the successful eradication of wild polio virus, alternative vaccination strategies for public-sector markets of low-resource countries are extremely important, but are still under development. Following polio eradication, inactivated polio vaccine (IPV) would be the only polio vaccine available, and would be needed for early childhood immunization for several years, as mainte...

Why do we not, then, use inactivated polio vaccines for routine immunisation in childhood? Parents would not need to be immunised at the same time as their child; and the current inactivated polio vaccines (improved considerably compared with the earliest examples) induce reliable and lasting immunity and are safe. Moreover, in the Netherlands the vaccine has virtually eliminated the disease,9 ...

OBJECTIVE Virologic surveillance of poliomyelitis to monitor the transmission of wild polio virus in the community. STUDY AREA All major hospitals of Delhi and surrounding area. METHODS Stool samples were collected from 1221 cases of acute flaccid paralysis during 1992-1994 and were subjected to virus isolation on RD and HEp2 cell line. Viruses isolated were analyzed further by microneutral...