Indian private company workers fly a drone to spray disinfectant in Bangalore, India, March 24, 2020. The number of confirmed COVID-19 cases in India has reached 519, India's federal health ministry said Tuesday evening. (Str/Xinhua)

Indian firemen spray disinfectant in Bangalore, India, March 24, 2020. The number of confirmed COVID-19 cases in India has reached 519, India's federal health ministry said Tuesday evening. (Str/Xinhua)

An Indian fireman sprays disinfectant in Bangalore, India, March 24, 2020. The number of confirmed COVID-19 cases in India has reached 519, India's federal health ministry said Tuesday evening. (Str/Xinhua)

An Indian fireman sprays disinfectant in Bangalore, India, March 24, 2020. The number of confirmed COVID-19 cases in India has reached 519, India's federal health ministry said Tuesday evening. (Str/Xinhua)

Indian firemen spray disinfectant in Bangalore, India, March 24, 2020. The number of confirmed COVID-19 cases in India has reached 519, India's federal health ministry said Tuesday evening. (Str/Xinhua)

Indian private company workers fly a drone to spray disinfectant in Bangalore, India, March 24, 2020. The number of confirmed COVID-19 cases in India has reached 519, India's federal health ministry said Tuesday evening. (Str/Xinhua)