That Time I Reincarnated as a Virus

On his death bed, Shiki was forced to be bedridden for months on end due to the emerging virus FOV-2. Giving up on life and agreeing to euphanization - a legal form of ending one's life - assisted suicide. But he was given a second chance at life, but this time with a twist ______ *Select your infection type* 1. Bacteria 2. Fungi 3. Plague 4. Parasite 5. Virus ______ This time, he was given the chance to restart over as an infectious disease, evolving as time goes by. In a world where diseases were competing over the annhilation of the human race, which disease would come out on top? Later, he looks at the current leaderboards where FOV-2, the virus that killed him, was now currently ranked top 10 amongst other diseases. Disclaimer : I am not well versed in biology so please do not expect a national geographic documentary