As per BMC data, three cases of BA.4 and one case of BA.5 Omicron sub-variants of coronavirus have been found in Mumbai`s Kasturba Hospital Laboratory. The data further reveals that two of the patients are 11-year-old girls and the other two are between 40 to 60 years of age group. All the cases have already recovered from the infection, the state`s health department mentioned on Monday.

"Out of the three B.A.4 variant cases, two 11-year-old girls do not fall in the age group of vaccination and one patient did not take any of the vaccines as he was suffering from allergies. In one case of B.A.5 variant, the patient has received both doses of vaccine," says BMC official.