It takes approximately 4 days in Coon years.
Human Immunodeficiency Virus -- this is HIV, the virus that causes AIDS.
Flu viruses. There are lots of different strains of flu virus, which is why new vaccines have to be made every year.
Cold virus. The common cold is caused by a virus.
Perhaps solvent and solute
I don’t know if you are in the middle of the game or something like for a