As the newest SARS-CoV-2 variant in town gets detected out of more countries, including India, public health expert Dr Srinath Reddy helps cut through the information clutter and explain why people need to change their behaviour and make it difficult for the virus to transmit. The virus “travels with people and celebrates with crowds”, says Dr Reddy, President, Public Health Foundation of India, cautioning that it's not yet clear if the virus has indeed run out of its bag of tricks.