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  1. Germs: Protect against bacteria, viruses and infections

  2. Infectious diseases - Symptoms & causes - Mayo Clinic

  3. 细菌:了解并防范细菌、病毒和感染 - 妙佑医疗国际

  4. Fight coronavirus (COVID-19) transmission at home - Mayo Clinic

  5. Hand-washing: Do's and don'ts - Mayo Clinic

  6. Tuberculosis - Symptoms & causes - Mayo Clinic

  7. Cold and flu viruses: How long can they live outside the body?

  8. Common cold - Symptoms and causes - Mayo Clinic

  9. How well do face masks protect against COVID-19? - Mayo Clinic

  10. Gérmenes: protégete contra las bacterias, los virus y las infecciones