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Valaciclovir, also spelled valacyclovir, is an antiviral medication used to treat outbreaks of herpes simplex or herpes zoster (shingles). [2] It is also used to prevent cytomegalovirus following a kidney transplant in high risk cases. [2] It is taken by mouth. [2] Common side effects include headache and vomiting. [2]
Public health experts are warning of a ‘quad-demic’ this winter. Here’s where flu, COVID, RSV, and norovirus are spreading
The inability of NA inhibitors to bind to the virus allowed this strain of virus with the resistance mutation to spread due to natural selection. Furthermore, a study published in 2009 in Nature Biotechnology emphasized the urgent need for augmentation of oseltamivir stockpiles with additional antiviral drugs including zanamivir. This finding ...
Context: The 2019 measles outbreak led to more than 5,700 cases and 83 deaths. The Ministry of Health cited Kennedy's visit and rhetoric as exacerbating vaccine hesitancy at a crucial moment, ...
Where the fact of evolutionary change was accepted by biologists but natural selection was denied, including but not limited to the late 19th century eclipse of Darwinism, alternative scientific explanations such as Lamarckism, orthogenesis, structuralism, catastrophism, vitalism and theistic evolution [a] were entertained, not necessarily separately.
The kaleidoscopic change has been jarring for Walter Orenstein, who persuaded states to tighten school mandates to fight measles outbreaks as head of the CDC’s immunization division from 1988 to ...
By convention, a communicable disease outbreak is declared over when a period of twice the incubation period of the infectious disease has elapsed without identification of any new case, however, for organisms with a short incubation period (e.g. fewer than ten days), a period of three times the incubation period is preferred.
He determined that if this were true, genetic drift would be a more powerful factor in molecular evolution than natural selection. [6] The "nearly neutral" theory proposes that molecular evolution acting on nonsynonymous substitutions is driven by mutation, genetic drift, and very weak natural selection, and that it is extremely sensitive to ...