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Pityriasis rosea is a type of skin rash. [2] Classically, it begins with a single red and slightly scaly area known as a "herald patch". [2] This is then followed, days to weeks later, by an eruption of many smaller scaly spots; pinkish with a red edge in people with light skin and greyish in darker skin. [4]
If you find yourself sneezing or wheezing this holiday season, it may not only be because you're overly emotional about that new robe your kids got you. It may be because of "Christmas tree ...
[10] [11] The pathogen often makes Douglas fir trees unsalable as Christmas trees and affects the Christmas tree farming industry. [10] Douglas firs are also affected by Phaeocryptopus gaumanni which causes Swiss needle cast. [6] Red band needle blight is a fungal disease which affects coniferous trees, particularly pine, with a worldwide ...
Lymphatic filariasis is a human disease caused by parasitic worms known as filarial worms. [2] [3] Usually acquired in childhood, it is a leading cause of permanent disability worldwide, impacting over a hundred million people and manifesting itself in a variety of severe clinical pathologies [6] [7] While most cases have no symptoms, some people develop a syndrome called elephantiasis, which ...
The national organization says industry research tells them many people who put up an artificial tree last year plan to buy a real tree this year, and most are citing the pandemic as the reason.
3. Placing your tree near candles or other heat sources. The NFPA found that nearly 20% of Christmas tree fires were caused by lamps or bulbs, while 11% resulted from candles. Additionally ...
Viral disease is the sum of the effects of viral replication on the host and the host's subsequent immune response against the virus. [3] Viruses are able to initiate infection, disperse throughout the body, and replicate due to specific virulence factors. [2] There are several factors that affect pathogenesis.
Establishing the viral etiology took many decades due to the difficulty of growing the virus in cell culture. In the 1940s and 1950s in the United States and Japan, caliciviridae could not be grown in culture, but as an experiment bacterial free filtrate of diarrhea was given to volunteers to check if viruses were present in volunteers' stool. [10]