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Coronavirus disease 2019 (COVID-19) - Symptoms and causes
Infectious diseases - Symptoms & causes - Mayo Clinic
Neuro-infectious Diseases - Overview - Mayo Clinic
Hantavirus pulmonary syndrome - Symptoms & causes - Mayo Clinic
Viral gastroenteritis (stomach flu) - Mayo Clinic
Viral hemorrhagic fevers - Symptoms and causes - Mayo Clinic
Infection: Bacterial or viral? - Mayo Clinic
Sexually transmitted diseases (STDs) - Symptoms and causes
Germs: Protect against bacteria, viruses and infections
Encephalitis - Symptoms and causes - Mayo Clinic