20 05 '22
![What are BA.4 and BA.5 sub-variants of Omicron? Symptoms and Precautions | How Omicron Variants lead to a COVID surge in India?](https://asthmabhawan.com/wp-content/uploads/2022/05/thequint_2022-05_87ca2914-8f47-4165-9ed4-52302eb1af4b_covid_19_omicron_variant_delta_dangerous_severe_who_study-480x369.jpg)
The threat of COVID has not subsided yet. In China, Europe, and Southeast Asia cases of Covid-19 have started increasing again. And surprisingly, in China, which has adopted a zero-COVID strategy, more than a thousand cases are coming daily in the last few days. Here, about 30 million people are isolated in their homes. Moreover,…