New Delhi, June 01 (By T V Venkateswaran and Jyoti Singh): After seventy days of lockdown, the unlock 1.0 is put into action. Officially designated lockdown 5.0, from June 1, 2020, the economy and ordinary life are returning to normalcy in a controlled and phased manner. This is the beginning of a new normal. It is going to be a long haul. Experts and officials are suggesting that ‘we must learn to live with the virus’. With vaccine still months away, we need to live in a new normal. Speaking to India Science Wire, Prof. K Vijay Raghavan, Principal Scientific Advisor to the Government of India, gave five tips to ‘living with the virus’. “Either we must change the virus, or we must change ourselves; changing the virus is going to take time,” says Prof. Vijay Raghavan. Research and development of drugs and vaccine are underway, but for them to be available for broader use, after proper clinical trials, is going to take time. Producing the drugs and vaccine for everyone is also time-consuming. Meanwhile, we can change ourselves to face the pandemic. Here are the five tips from Prof. Raghavan: 1. Wear a mask when you step out of the houses Recent studies have found that when a person speaks, about 1000 tiny droplets of saliva comes out. If that person happens to be infected with novel coronavirus, then each of these droplets will carry thousands of germs. Large droplets will fall off the ground, usually within one-metre distance. However, the plum of tiny droplets can float in the air for a longer time, mainly if the area is not well ventilated. Many people who are infected by the virus do not show any symptoms. Therefore, they may not even be aware that they are affected. Wearing a mask protects not only us but others as well, if we are infected. “We have prepared a handbook on manufacturing homemade mask, which one can use to make their own face cover,” says Prof. Raghavan. 2. Practise vigilant hand hygiene An analysis of  75,465 COVID-19 cases in China by a WHO-led…