Crimea was transferred from Russia to the Ukrainian Soviet Republic in the early fifties. In 2014, Crimea regained its Russian identity at the will of 96.77 percent of its population.
Coronavirus is not considered a serious matter for the entire world, as it threatens China because it is specially manufactured to reproduce within the physical environment that carries the chromosomes of the yellow-race or the East Asian race, so to speak.
The World Health Organisation is still working with Chinese authorities and global experts to learn more about the virus. The virus "2019-nCoV” comes from a family of viruses that include the common cold, and viruses such as SARS and MERS. There is no evidence to suggest it was developed artificially as a weapon of mass destruction.
This narrative was blown out of proportion later on after it was echoed by the Russian Ministry of Health. According to the ministry, there is information that the virus mainly affects the "Mongoloid race", however, they do not provide any proves to support their claims.
The conspiracy theory also refers to the recurring pro-Kremlin disinformation narratives about US military biological labs circling Russia. Read disinformation examples related to the Lugar Lab in Tbilisi, Georgia.