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Germs: Protect against bacteria, viruses and infections
Infectious diseases - Symptoms & causes - Mayo Clinic
细菌:了解并防范细菌、病毒和感染 - 妙佑医疗国际
Fight coronavirus (COVID-19) transmission at home - Mayo Clinic
Hand-washing: Do's and don'ts - Mayo Clinic
Tuberculosis - Symptoms & causes - Mayo Clinic
Cold and flu viruses: How long can they live outside the body?
Common cold - Symptoms and causes - Mayo Clinic
How well do face masks protect against COVID-19? - Mayo Clinic
Gérmenes: protégete contra las bacterias, los virus y las infecciones