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1 jan 1960 ano - Serogroup A and C Vaccines are Developed

Descrição:

*were only effective for a short period of time, prompting further improvement

Adicionado na linha do tempo:

Meningitis B Vaccine graphic

BySiobahn Devlin

29 out 2018

Data:

1 jan 1960 ano

Agora

~ 64 years ago

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