MOSCOW - Russia is working to develop a vaccine against the coronavirus strain in China, Rospotrebnadzor, the country's consumer safety regulator said on Wednesday, the RIA news agency reported."Yes, of course, the development of a vaccine is underway. Every time we have a mutation (of a virus), we start developing a vaccine immediately," Anna Popova, the head of Rospotrebnadzor, was cited as saying.RIA cited Elena Yezhlova, head of Rospotrebnadzor's Epidemiological Surveillance Department, as explaining the process."The development of a vaccine is a long and complicated process; a decision is made on the basis of risk and the level of need dictated by the current situation," Yezhlova was quoted as saying."At present, we will rely on the WHO's recommendations."Rospotrebnadzor earlier on Wednesday confirmed it had strengthened sanitary and quarantine control at all entry points into the country due to the coronavirus outbreak in China.