News Headlines. 1.World Health Organisation (WHO) chief scientist Dr Soumya Swaminathan on Monday told TOI that all countries should scale up the surveillance, including genome sequencing, following the emergence of the new Omicron variant of Covid.-Times of India 2.Canada will allow entry to people who have been inoculated with Bharat Biotech's Covaxin vaccine against coronavirus disease (Covid-19) from Tuesday. The approval for the Hyderabad-based company’s vaccine was given on November 19.Starting November 30, vaccination will be required for travel within and out of Canada.-hindustantimes.com 3.Parag Agrawal, 37, an IIT-Bombay graduate, has replaced Jack Dorsey as the new Twitter chief executive officer, becoming the youngest CEO in top 500 companies. The Board of Directors unanimously appointed him as the new CEO.-ndtv.com 4.After Lok Sabha passed Farm Laws Repeal Bill 2021, Bhartiya Kisan Union (BKU) leader Rakesh Tikait credited farmers who lost their lives during protest. ...