Sources: 

Covid-19 cases are on the rise in India, with a notable increase attributed to the rapidly spreading subvariants OF.7 and NB.1.8.
In Mumbai, the state health department reported
95 cases in May, a sharp increase compared to the
total of 106 cases since January.
Additionally, three cases have been reported in Haryana's Gurgaon and Faridabad.
In Chennai, doctors are observing that fevers initially thought to be influenza are increasingly testing positive for Covid-19.
The emergence of these subvariants is concerning, as they are both offshoots of the JN.1 lineage.
Preliminary research from China indicates that the NB.1.8.1 variant, detected in the U.S. through airport screenings, shows stronger cell-binding abilities, potentially increasing its transmissibility.
The U.S. has identified this variant in multiple states, with the earliest cases dating back to late March in California and Washington.
As the situation evolves, health officials are closely monitoring the spread of these variants to mitigate further outbreaks.
Sources: 
Covid-19 cases in India are surging, with Mumbai reporting 95 cases in May alone, a significant increase compared to the total of 106 since January. This rise is linked to the rapid spread of subvariants OF.7 and NB.1.8, both offshoots of the JN.1 lineage.