Can viruses be inside only humans?

Viruses have a wide host range and can infect a variety of organisms, including humans, animals, plants, and even bacteria. While certain viruses may have a preference for specific hosts, it is not accurate to state that viruses can only be inside humans.

Here are a few examples of viruses that can infect non-human hosts:

Canine distemper virus: This virus primarily infects dogs, causing a highly contagious and potentially fatal disease. However, it can also affect other carnivores such as wolves, foxes, and raccoons.

Feline leukemia virus: As the name suggests, this virus primarily infects cats and is associated with leukemia and other blood-related disorders.

Ebola virus: The Ebola virus is known to cause severe hemorrhagic fever in humans and non-human primates such as gorillas, chimpanzees, and monkeys.

Newcastle disease virus: This virus primarily affects birds, particularly poultry, causing respiratory and nervous system symptoms.

Tobacco mosaic virus: This virus is known to infect plants, specifically tobacco plants, leading to mosaic patterns on the leaves.

Influenza virus: While influenza viruses are often associated with human infections, some strains can also infect other animals, including pigs, horses, and birds.

This list is not exhaustive, as there are numerous viruses with diverse host ranges across various animal, plant, and microbial species. Therefore, it is crucial to recognize that viruses are not exclusively restricted to infecting only humans.