Over the past two decades, there has been a rapid increase in throat cancer in the west, to the extent that some have called it an epidemic. This has been due to a large rise in a specific type of throat cancer called oropharyngeal ...
Apr 26, 2023
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New South Wales health authorities have issued a measles alert after a baby who recently returned from overseas, and subsequently visited several sites in Western Sydney, tested positive to the virus.
Mar 30, 2023
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The Biden administration intends for the COVID-19 public health emergency to end in May, while some lawmakers in Congress wish to end it immediately. The World Health Organization has declared we're on the verge of a turn ...
Feb 1, 2023
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After nearly three years of keeping COVID under control, China is experiencing a massive new wave of COVID infections. The official figures reporting 60,000 deaths between December 8 and January 12 are widely seen as underestimating ...
Jan 23, 2023
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The World Health Organization and the U.S. Centers for Disease Control and Prevention say measles immunization has dropped significantly since the coronavirus pandemic began, resulting in a record high of nearly 40 million ...
Nov 23, 2022
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Early in the pandemic, the term "herd immunity" hit the headlines, along with a polarized discussion on how to achieve it.
Jun 3, 2022
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Shielding those vulnerable to COVID-19, while allowing the virus to spread, largely unmitigated, through the rest of the population, would have failed according to a new modeling paper published today in PLOS Global Public ...
Apr 26, 2022
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Achieving classical herd immunity against SARS-CoV-2, the virus that causes COVID-19, may not be attainable, according to a new perspective published in The Journal of Infectious Diseases. However, widespread use of currently ...
Mar 31, 2022
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It's 2 p.m. on a Wednesday in Chester, Pennsylvania, and nurses Susan Pollock and Carol Von Colln are inside a Delaware County vaccine clinic doing what they spend a lot of time doing these days: waiting.
Mar 21, 2022
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Poland is lifting most COVID-19 restrictions including limits on the people inside restaurants and theaters from March 1, but will continue with mandatory face masks indoors and isolation rules, the government said Wednesday.
Feb 23, 2022
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Herd refers to a social grouping of certain animals of the same species, either wild or domestic, and also to the form of collective animal behavior associated with this (referred to as herding) or as a verb, to herd, to its control by another species such as humans or dogs.
The term herd is generally applied to mammals, and most particularly to the grazing ungulates that classically display this behaviour. Different terms are used for similar groupings in other species; in the case of birds, for example, the word is flocking, but flock may also be used, in certain instances, for mammals, particularly sheep or goats. A group of quail is often referred to as a covey. Large groups of carnivores are usually called packs, and in nature a herd is classically subject to predation from pack hunters.
Special collective nouns may be used for particular taxa (for example a flock of geese, if not in flight, is sometimes called a gaggle) but for theoretical discussions of behavioural ecology, the generic term herd can be used for all such kinds of assemblage.[citation needed]
The word herd, as a noun, can also refer to one who controls, possesses and has care for such groups of animals when they are domesticated. Examples of herds in this sense include shepherds (who tend to sheep), goatherds (who tend to goats), cowherds (who tend cattle), and others.
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