Introduction of Seasonal flu and COVID-19
Table of Contents
Seasonal flu and COVID-19 both are contagious respiratory illnesses, but their causative agents are different viruses. The etiological agent of COVID-19 is severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) first identified in 2019 while flu is caused by infection with a flu virus (influenza viruses). The flu mortality rate is low than COVID-19.
COVID-19 Molecular Diagnostics Laboratory

Differences between Seasonal flu and COVID-19
The differences between Seasonal flu and COVID-19 are as follows-
Features | Seasonal flu | COVID-19 |
Mortality rate | Low | High |
Hospitalization rate | Low | High |
Transmission rate | Low | High |
Case Fatality Rate (CFR) | 0.1% | 2% |
Incubation period | 1 to 4 days | 2 to 14 days |
Causative agent | Influenza Viruses | SARS-CoV-2 |
Drug | Influenza antiviral drugs | Remdesivir |
Vaccine | Influenza vaccine | COVID-19 vaccine |
Keynotes on flu and COVID-19
- Variants of SARS-CoV-2 Alpha, Beta, Gamma, Delta, and Omicron.
- Both are spread by droplets and aerosols when an infected person coughs, sneezes speaks, sings, or breathes.
- Older adults, people of any age with chronic medical conditions, immunosuppressed hosts (such as HIV/AIDS, patients receiving chemotherapy or steroids, or malignancy), pregnant ladies, and healthcare workers are prone to flu and COVID-19.
- To minimize COVID-19 and influenza spread hand washing is mandatory when touching contaminated surfaces, eyes, nose, or mouth.
- Medical consultation is necessary when you are suffering from shortness of breath, loss of appetite, persistent pain or pressure in the chest, confusion, and high temperature (above 38 °C).
- WHO reports confirm that vaccines developed for COVID-19 do not protect against influenza, and similarly, the flu vaccine does not protect against COVID-19.
- Both vaccinations (flu and COVID-19) will be used when you have had a flu shot.
- No doubt, it is possible to catch COVID-19 and influenza at the same time.
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