After Uttar Pradesh reported a major spike in cases of viral fever, dengue, and malaria with Firozabad emerging as a major hotspot, now reports of cases of viral and dengue rising in Bihar and Delhi as well. A surge in viral fever cases among children has been reported in several hospitals in the state capital. The number of children affected with viral fever is also rising in other districts. With our panel of experts, we look at what is driving this surge.