Union health secretary Rajesh Bhushan will on Saturday review the situation in 10 states, including Kerala, where cases of coronavirus disease (Covid-19) are on the rise even as the rest of the country has reported fewer infections, officials said. Bhushan will review the situation in Kerala, Maharashtra, Karnataka, Tamil Nadu, Andhra Pradesh, Odisha, Assam, Mizoram, Meghalaya and Manipur.