systematic vaccination造句
例句與造句
- Volunteers must already have received a vaccine decades ago, before France stopped systematic vaccinations.
- Mattei also said France has ruled out systematic vaccination of the population out of concerns the vaccine can occasionally be deadly or cause serious side effects.
- Faced with fears of a potential public health disaster, France has suspended systematic vaccinations of school children against Hepatitis B, four years after starting the mass immunization program.
- Health officials blamed a lack of resources in Central African Republic, one of the world's poorest countries, saying there had been no systematic vaccination for the disease since 1992.
- It's difficult to find systematic vaccination in a sentence. 用systematic vaccination造句挺難的