2011-03-252011-03-254-9-99 17:2000https://hdl.handle.net/1911/41583The origin of the image is Domestic. Watermark Unknown.DrawingDomesticEnterovirus,entervirusa00gentervirusa00g预防肠病毒，勤洗手；避免出入拥挤公共场所，维持居家环境清洁、通风； [Prevent Enterovirus. Frequently wash your hands. Avoid cramped public restroom. Keep living area clean and circulating.]HealthPublic Service AdsEnterovirusnewspapers [报纸]