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1 янв 1908 г. - Polio

Описание:

Its caused by a very small virus. The virus affected somone who is infected. The virus spreads from feces into water which is contagious. The two avaible vaccines are OPV- oral polivirus and IPV-inactiviated polivirus vaccine.

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ByMahy
14 дек 2018
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Дата:

1 янв 1908 г.
Сейчас
~ 116 г назад
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