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Stories written by
Menaka Rao and Nayantara Narayanan
Vaccine-derived polio found in Hyderabad sewage is an outcome of India’s immunisation strategy
Public health experts expect to find vaccine-derived polio virus in the environment for at least the next year.
Menaka Rao and Nayantara Narayanan
· Jun 16, 2016 · 12:30 pm
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