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Visitors from other countries could bring polio and US switched to 100% inactivated polio vaccine in 2000 to eliminate the risk of Vaccine-Associated Paralytic

by croes 9mo ago

Visitors from other countries could bring polio and US switched to 100% inactivated polio vaccine in 2000 to eliminate the risk of Vaccine-Associated Paralytic Polio.

giantg2 9mo ago
That's why my comment says travel to/from risky areas should require it.