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Parvoviruses are among the smallest viruses (hence the name, from Latin parvus meaning small) and are 18–28 nm in diameter. [16] Parvoviruses can cause disease in some animals, including starfish and humans. Because the viruses require actively dividing cells to replicate, the type of tissue infected varies with the age of the animal.
These bees often suffer infestations of varroa mites, which are vectors for deformed wing virus, [31] as a result, this virus has become one of the most widely distributed and contagious insect viruses on the planet. [32] The virus causes stunted wings and as a result, the infected bees are unable to leave the hive and forage for nectar. [31]
Feline foamy virus; Feline immunodeficiency virus; Feline infectious peritonitis; Feline leukemia virus; Carnivore protoparvovirus 1; Feline viral rhinotracheitis; Filoviridae; Foot-and-mouth disease; Foot-and-mouth disease virus; Fowlpox
Virus is transmitted via direct contact, bodily secretions and contaminated fomites, with the virus being able to persist in the environment for more than two weeks. Persistently infected animals are the most important source of the virus, continuously excreting a viral load one thousand times that shed by acutely infected animals. [19]
Nine herpesvirus types are known to primarily infect humans, [7] at least five of which are extremely widespread among most human populations, and which cause common diseases: herpes simplex 1 and 2 (HSV-1 and HSV-2, also known as HHV-1 and HHV-2; both of which can cause orolabial and genital herpes), varicella zoster (VZV or HHV-3; the cause ...
The researchers looked at nearly 12 million virus genomes and detected almost 3,000 instances of viruses jumping from one species to another. Of those, 79% involved a virus going from one animal ...
The following outline is provided as an overview of and topical guide to concepts related to infectious diseases in humans.. Infection – transmission, entry/invasion after evading/overcoming defense, establishment, and replication of disease-causing microscopic organisms (pathogens) inside a host organism, and the reaction of host tissues to them and to the toxins they produce.
After the release of new influenza virus, the host cell dies. Transcription of mRNAs initiated by viral polymerase using cap snatching. Orthomyxoviridae viruses are one of two RNA viruses that replicate in the nucleus (the other being retroviridae). This is because the machinery of orthomyxo viruses cannot make their own mRNAs.