Key result
Routine and supplementary polio vaccination is linked to localized poliovirus circulation in Pakistan.
Why the study?
Despite global decreases in polio cases since 1988, poliomyelitis remains endemic in Pakistan with widespread virus circulation in 1997.
Population
1147 polio cases reported in Pakistan in 1997
Comparison
Impact of routine and supplementary vaccination on polio incidence
Design
Descriptive report of polio eradication activities
Follow-up
1994-1998
Loading...
Hypothesis-generating for vaccination-associated localized circulation; prospective studies needed before informing eradication strategies.
The report highlights progress in polio eradication in Pakistan, showing a shift from widespread to geographically localized poliovirus circulation by 1998.
A 1999 study studied Poliomyelitis. Routine and supplementary vaccination was evaluated on Polio incidence and geographic circulation. Routine and supplementary vaccination activities in Pakistan were associated with geographically localized poliovirus circulation for the first time in 1998.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: