GENEVA — Laos has suffered a case of vaccine-derived polio, the World Health Organization said on Monday, in a new setback to hopes of eradicating the disease after the virus resurfaced in Ukraine and Mali. …read more
Source: Bangkok Post
GENEVA — Laos has suffered a case of vaccine-derived polio, the World Health Organization said on Monday, in a new setback to hopes of eradicating the disease after the virus resurfaced in Ukraine and Mali. …read more
Source: Bangkok Post