H1N1 cases are rising sharply, with doctors reporting a one-by-one pattern of infection inside households. One family member falls sick, followed by another, as close contact, shared air and commonly touched surfaces can help spread influenza. Why are H1N1 cases rising this year? Doctors point to seasonal changes, low flu-vaccine uptake, reduced natural immunity and increased testing and surveillance. Importantly, experts say the currently circulating H1N1 strain is not a new or more dangerous strain. NDTV’s Apurva Adhikari brings you this report.
