Objectives: Difference of the affected age group by COVID -19 in INDIA, South Korea, Italy and USA till 5th April by taking the records from the authentic sites.

Materials and Methods: It was an observational study conducted for a period of 2 months and five days. All the records from the CDC (Center for Disease Control and Prevention) and who were taken to observe the variation among the age groups affected by the covid -19 and all the records were compared to find out the variation in the affected age group. Different statistical results were taken for this comparison.

Results: By this observational study it was found that the most age group affected in India was 30-40 years compare to the other countries were affected age group was in south Korea 20-29, italy70-79 and USA 85 and more.

Conclusion: Graph of India was different from rest of the countries that too is because of the more test done in the age group of 20-40.