In its original form, the virus survives in just two countries. But a type linked to an oral vaccine used in other nations has already turned up in the West.
Source
In its original form, the virus survives in just two countries. But a type linked to an oral vaccine used in other nations has already turned up in the West.
.. . . . . . . . . . . . . . . . . . . . . . . . . %%%. . . * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ - - - - - - - - - - - - - - - - - - - - . . . . .