At present, the preventive measures against novel coronavirus diseases are to reduce the number of people going out, wear masks, wash hands frequently and carry out the necessary disinfection. However, the most important preventive measure for the disease is actually a vaccine. The novel coronavirus pneumonia is a very new disease, and the sequence and protein expression of the virus have been rapidly clarified. Relevant researchers have also identified sites of the virus that can be used for vaccine development. Vaccines are in the process of being developed, but they need to be developed with attention to effectiveness and also safety. Once a vaccine is produced, it may be necessary to conduct animal and human trials to prove safety and efficacy. Therefore, it is unlikely that a vaccine will be available for clinical use in the near future, and it may take several months or more before a vaccine that successfully prevents the new coronavirus is available to the population. Source: Dr. Yurai