Washington: The Corona vaccine has not yet come to the common public in the world. But the statements of experts and veteran celebrities are constantly being heard about this. In this episode, Bill Gates has told that the public will have to take several doses of corona vaccine to protect themselves from the corona. Microsoft co-founder said on Wednesday that at present there is no vaccine that outperforms Corona in a single dose. According to the news agency, currently over 150 vaccines of coronavirus are in various stages of development. Some of these are now on the way to the next stage of the diagnostic test. The Bill and Melinda Gates Foundation has funded $ 300 million in a global effort to find Covid-19 vaccines. In a blog post, Gates had previously stated that it may be needed to develop a safe and effective vaccine to combat the epidemic. Bill Gates says that we need to make billions in doses so that they can be delivered to all parts of the world. We need to do this as soon as possible. He has told that the world will need to make and distribute at least 7 billion doses of vaccine. But in case of multiple doses given to defeat Corona, 14 billion doses may be required. Jana: It is also being said that corona infection is spreading rapidly in the world. Currently, cases of corona infection have increased to 15,166,401. And the death toll has risen to 621,890. Also Read: Corona wreaks havoc in this city of japan Sports Authority of India can organize national wrestling camp next month More than 2000 cases of coronavirus reported in the Philippines in one day North Korea issues strict guidelines for people who don't wear masks