it’s known arbovirus A variety of viruses transmitted to humans or other vertebrates by certain blood-sucking arthropods, esp. insect (flies and mosquitoes) and arachnids (check).
In fact, arboviruses are not part of the current virus classification system, which is based on the nature and structure of their viral genomes. There are a large number of arboviruses that affect humans and animals around the world. More than 250 species have been described worldwide. At least 80 species are capable of causing disease in humans.
main family Arboviruses belong to:
It is a system used to classify viruses based on their genetic material and method of replication.It was discovered by American biologist David Baltimore in 1971 And viruses are divided into seven main groups, called I to VII. It is useful for understanding the biology and replication of viruses and has implications for how therapeutic strategies and vaccines are developed.It is based on the following characteristics
First group:Virus double stranded DNA (dsDNA): These viruses have double-stranded DNA genomes and replicate their DNA in the nucleus of the host cell. Examples include herpes viruses and varicella-zoster virus.
Second Group:Virus single stranded DNA (ssDNA): These viruses have single-stranded DNA genomes that require synthesis of complementary strands before replicating. Examples include parvovirus.
The third group:Virus double stranded RNA (dsRNA): These viruses have double-stranded RNA genomes and replicate their RNA in the cytoplasm of the host cell. Examples include reovirus.
Fourth group:Virus Positive single-stranded RNA (+ssRNA): These viruses have single-stranded RNA genomes with positive polarity that can be directly used as mRNA for protein synthesis. Examples include the common cold virus and hepatitis C virus.
Group 5:Virus negative single-stranded RNA (-ssRNA): These viruses have single-stranded RNA genomes with negative polarity that require synthesis of complementary strands before replication. Examples include influenza viruses and Ebola viruses.
The sixth group:Virus double-stranded sense RNA (ssRNA-RT): These viruses have a single-stranded RNA genome with positive polarity, but they use reverse transcriptase (RT) to replicate their RNA through a DNA intermediate stage. Examples include HIV (human immunodeficiency virus) and other retroviruses.
Group 7:Virus reverse double stranded DNA (dsDNA-RT): These viruses have double-stranded DNA genomes that use reverse transcriptase (RT) to replicate their DNA. Examples include hepatitis B virus and some endogenous retroviruses.
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