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Viruses can cause massive human mortality. The smallpox virus killed an estimated 10 to 15 million people per year until 1967. [3] Smallpox was finally eliminated in 1977 by extinction of the virus through vaccination, and the impact of viruses such as influenza, poliomyelitis and measles are mainly controlled by vaccination. [4]
Wastewater-based epidemiology (or wastewater-based surveillance or sewage chemical-information mining) analyzes wastewater to determine the consumption of, or exposure to, chemicals or pathogens in a population. This is achieved by measuring chemical or biomarkers in wastewater generated by the people contributing to a sewage treatment plant ...
Many latent and asymptomatic viruses are present in the human body all the time. Viruses infect all life forms; therefore the bacterial, plant, and animal cells and material in the gut also carry viruses. [6] When viruses cause harm by infecting the cells in the body, a symptomatic disease may develop.
This category includes any viruses that can infect humans. Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large.
Marine viruses are defined by their habitat as viruses that are found in marine environments, that is, in the saltwater of seas or oceans or the brackish water of coastal estuaries. Viruses are small infectious agents that can only replicate inside the living cells of a host organism, because they need the replication machinery of the host to ...
Spillover is a common event; in fact, more than two-thirds of human viruses are zoonotic. [4] [5] Most spillover events result in self-limited cases with no further human-to-human transmission, as occurs, for example, with rabies, anthrax, histoplasmosis or hydatidosis. Other zoonotic pathogens are able to be transmitted by humans to produce ...
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The genome organization and RNA synthesis of order Mononegavirales. A virus is a member of the order Mononegavirales if [2] [3]. its genome is a linear, typically (but not always) nonsegmented, single-stranded, non-infectious RNA of negative polarity; possesses inverse-complementary 3' and 5' termini; and is not covalently linked to a protein;