Diseases, Conditions, Syndromes

为什么孩子的神秘肝炎吗dren may have been here all along

The children typically show up at hospitals scattered across the country, one or two at a time, with symptoms like unexplained vomiting, diarrhea and jaundice. These are the classic signs of hepatitis—inflammation of the ...

Genetics

The pandemic is changing the genetic landscape of virus strains

A University of Sydney led study reveals how the pandemic has changed the normal patterns of winter viruses in Australia, with new strains emerging and leaving most others "extinct." Researchers are warning of unexpected ...

Diseases, Conditions, Syndromes

Nine monkeypox cases confirmed in United States

Nine cases of monkeypox had been confirmed in seven states as of Wednesday, and there are likely to be more cases as a worldwide outbreak continues, U.S. health officials say.

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COVID vaccine development was quick. What's holding HIV back?

While multiple effective COVID-19 vaccines were developed with astonishing speed, it has been more than 40 years since University of Rochester alumnus Michael Gottlieb, M.D., first described the disease that became known ...

Infectious disease

Aninfectious diseaseis a clinically evident disease resulting from the presence of pathogenic microbial agents, including pathogenic viruses, pathogenic bacteria, fungi, protozoa, multicellular parasites, and aberrant proteins known as prions. These pathogens are able to cause disease in animals and/or plants. Infectious pathologies are usually qualified ascontagious diseases(也称为传染病)由于其potential of transmission from one person or species to another. Transmission of an infectious disease may occur through one or more of diverse pathways including physical contact with infected individuals. These infecting agents may also be transmitted through liquids, food, body fluids, contaminated objects, airborne inhalation, or through vector-borne spread.

The terminfectivitydescribes the ability of an organism to enter, survive and multiply in the host, while theinfectiousnessof a disease indicates the comparative ease with which the disease is transmitted to other hosts. An infection however, is not synonymous with an infectious disease, as an infection may not cause important clinical symptoms or impair host function.

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