Virus is a living and also non-living borderline holding kind of organism. There are about 3 lakh 20 thousand types of viruses in the world, which can infect mammals. Mammals. That is, those who do not lay an egg but give birth to a child. The most dangerous of these viruses kills about one and … Continue reading Top 5 Most Dangerous Viruses in the World, which Wreaked Havoc More Than Corona