It is not ruled out that no vaccine can be developed and humans and viruses coexistThe European Union reported on May 5th that the European Union News Agency quoted CNN as reporting that with the continuous spread of the New Coronary Pneumonia epidemic, more than 250,000 people have been killed so far. The World Health Organization (WHO) special envoy David Nabarro said in an interview with CNN in the United States that he does not rule out the possibility of developing a new vaccine against the pneumonia virus.According to reports, a special envoy of the World Health Organization, a professor at Imperial College London , and a well-known virology expert Nabaro pointed out in an interview that there are still some diseases that lack the corresponding vaccines.He believes that it is impossible to be absolutely sure that the new coronavirus vaccine will appear, and even if it does, it is unknown whether it can pass the effect and safety tests. For example, humans have discovered HIV for…