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- Infection: Bacterial or viral? - Mayo Clinic
What's the difference between a bacterial infection and a viral infection? Bacteria cause bacterial infections Viruses cause viral infections Antibiotic medicines kill or keep many bacteria from growing but don't treat viruses Antiviral medicines help the body clear out some viruses Bacteria Bacteria are single-celled microorganisms
- Coronavirus disease 2019 (COVID-19) - Symptoms and causes
COVID-19 is caused by infection with the severe acute respiratory syndrome coronavirus 2, also called SARS-CoV-2 The coronavirus spreads mainly from person to person, even from someone who is infected but has no symptoms
- COVID-19 vs. flu: Similarities and differences - Mayo Clinic
During the COVID-19 pandemic, you may have heard that coronavirus disease 2019 (COVID-19) is similar to the flu (influenza) COVID-19 and the flu are both contagious respiratory diseases They are both caused by viruses They have some common symptoms But COVID-19 and flu infections can affect people differently
- Mayo Clinic Q and A: Nasal mucus color — what does it mean?
Thick, colored nasal mucus more often occurs at the beginning of a bacterial illness, rather than several days into it, as occurs with a viral infection In addition, symptoms due to a bacterial infection often last more than 10 days without improvement
- Pneumonia - Symptoms and causes - Mayo Clinic
Viruses, including COVID-19 Some of the viruses that cause colds and the flu can cause pneumonia Viruses are the most common cause of pneumonia in children younger than 5 years Viral pneumonia is usually mild But in some cases it can become very serious Coronavirus 2019 (COVID-19) may cause pneumonia, which can become severe
- Infectious diseases - Symptoms causes - Mayo Clinic
Rest and home remedies may clear up mild infections But other infections can be life-threatening, and treatment could involve hospital care Many infectious diseases, such as measles and chickenpox, can be prevented by vaccines And other illnesses, such as COVID-19, might make you less sick if you get vaccinated
- Mayo Clinic Q and A: Allergies or a virus? How to tell the difference
While COVID-19 symptoms generally appear two to 14 days after exposure to SARS-CoV-2, symptoms of a common cold usually appear one to three days after exposure to a cold-causing virus
- Influenza (flu) - Symptoms and causes - Mayo Clinic
Learn more about the symptoms, causes and prevention of this potentially deadly viral infection that attacks the respiratory system
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