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Module 2
Epidemiology
Table 1: Comparison of epidemiological characteristics between Common Flu, SARS, MERS, and SARS-CoV-2.
| Disease | Encounter of Disease | Symptoms | Conveyance of Disease | Incubation period | Treatment | |
| Common Flu | Gradual | Runny nose, Sneezing, Sore throat, Mild fever, Headache | Human to Human | 2 to 3 days after exposure | Illness can be treated with medication. | |
| Severe Acute Respiratory Syndrome (SARS) | Sudden or immediate | Fever, Headache, Dry Cough, shortness of breathing, Muscle aches, Diarrhea | Human to Human | 2 to 9 days after exposure | Pneumonia treating antibiotics, Breathing ventilator to deliver oxygen, Antiviral medicines | |
| Middle East Respiratory Syndrome (MERS) | Sudden or immediate | Nausea, Mild Fever, Diarrhea, Vomiting, Sneezing, Sore throat | Human to Human | 5 to 9 days after exposure | Cure only for symptoms like Fluids replacement, Oxygen therapy | |
| Novel Coronavirus (COVID-19) | Sudden or immediate | Shortness of Breath, Fever, Dry Cough, Fatigue | Human to Human | 2 to 14 days after exposure | No vaccines are available. Symptoms can be a cure. |