The decrease in the number of active COVID-19 cases in India can be attributed to several factors, including:

• The nationwide lockdown imposed by the Indian government helped to flatten the curve of new cases by restricting the movement of people and reducing the spread of the virus.
• Increased awareness and safety measures such as wearing masks, maintaining social distancing, and frequent hand washing have helped curb the spread of the virus.
• The Indian government's aggressive testing strategy has also contributed to the reduction of active cases, as it enables early detection and isolation of COVID-19 positive individuals.
• The vaccination drive that has been launched in India has also contributed to the decrease in cases, as it helps to build immunity against the virus.
• Despite the decline in active cases, it is important to continue to follow safety protocols and take precautions to prevent the resurgence of the virus.

Overall, concerted efforts from the government, healthcare workers, and the public have played a vital role in reducing the number of active COVID-19 cases in India.