How can something "not alive" reproduce and spread? Well, viruses have a lipid cover that makes them look like food to cells, roughly speaking, and then when the cell "eats" them, the RNA or DNA inside of the virus goes into the nucleus of the cell and replaces the cell's DNA to hijack the cell and trick it into turning all the nutrients that the cell eats into more viruses. The virus outsource the reproductive function to the cell. Then the cell gets packed inside with viruses and then it blows out due to so many viruses inside and then the process repeats with other cells. That's why your muscles ache when you catch a cold because the virus damages your muscles by destroying cells. The virus will keep doing this until you develop antibodies to neutralise the virus or you die. Viruses are just chains of protein (which is the DNA or RNA) wrapped up in a lipid envelope if you like. They don't eat anything like bacteria do because they have no organs inside. They are just information basically coded into protein on how to hijack cells. Explain to me why viruses can't exist, please. As to my trip to Mexico, no problem getting out of England, no problem arriving in Mexico but we had problems to get on the plane in Mexico because the Aeromexico fucking employee didn't want to let us get on the plane until we told him that we lived in England and that England wasn't requiring anything. Then he backed down. Then we arrived back in England and no problem. People living freely and not wearing masks unlike in Mexico. Totally the opposite to what Jeff says.