Several European counties are reporting a massive spike in Covid infections in the past 10 days, with experts indicating the arrival of a new wave of infections due to slow intake of Covid booster doses and lockdowns being lifted.

Several European countries seeing rise in Covid infections due to Omicron subvariants BA.4 and BA.5: Report

According to data released by UK's Office for National Statistics(ONS), coronavirus cases may be starting to rise in Northern Ireland and England driven by the BA.

Early signs of virus surge in England and Northern Ireland due to Omicron variants: UK ONS data

India's western state of Maharashtra on Saturday reported the first case of B.A.4 and B.A.5 subvariants of the Omicron sub-lineage of coronavirus. The state health department said all patients were treated at home as they suffered mild symptoms.

Maharashtra detects first cases of B.A.4 & B.A.5 Omicron subvariants

Indian SARS-CoV-2 Consortium on Genomics(INSACOG) on Sunday confirmed the presence of BA.4 and BA.5 Omicron subvariants in India. The health body said a 19-year-old woman in India's southern state of Tamil Nadu was detected with the B.

India confirms presence of Omicron BA.4 and BA.5 subvariants

India has reported its first case of BA.4 Omicron variant in India, according to the recent data by the Indian SARS-CoV-2 Genomics Consortium (INSACOG), the group of genetic laboratories that are working to identify new variants of SARS-CoV-2 from Indian Covid positive patients.

India reports first case of Omicron BA.4. Here’s all you need to know about new Covid variant

European health officials have warned that Omicron strains BA. 4 and BA. 5 can escape vaccines and immunity. Amid fear of a ''summer wave,'' the European Centre for Disease Prevention and Control (ECDC) has become the first public authority to label both the strains as ''variants of concern.

European health officials warn Omicron strains BA.4 and BA.5 can escape vaccines and immunity

Amid growing concerns over the presence of coronavirus variants, the World Health Organisation(WHO) said it is monitoring the BA.4 and BA.5 lineages which are the "sister variants" of the BA.

WHO tracks two new Omicron subvariants: What are BA.4 and BA.5 strains?