how was the hong kong flu contained
Despite the fatality of the 1957 Asian Flu in China, little improvement had been made regarding the handling of such epidemics. Persons exposed to the 1957 virus in particular apparently retained immune protection against the 1968 virus, explaining the relative mildness of the 1968 outbreak.The 1968 pandemic was initiated by the emergence of a,Although the 1968 flu outbreak was associated with comparatively few deaths worldwide, the virus was highly.The 1968 flu pandemic caused illness of varying degrees of severity in different populations. It was caused by an H3N2 strain of the influenza A virus, descended from H2N2 through antigenic shift, a genetic process in which genes from multiple subtypes reassorted to form a new virus. The outbreak lasted six months in total, from July to December 1968. Worldwide deaths from the virus peaked in December 1968 and January 1969, when public health warnings.The death rate from the Hong Kong flu was lower than for other 20th-century pandemics.The H3N2 virus returned during the following 1969/70 flu season, which resulted in a second, deadlier wave of deaths in Europe, Japan, and Australia.Flu symptoms typically lasted four to five days, but some cases persisted for up to two weeks.The Hong Kong flu was the first known outbreak of the,The Hong Kong flu strain shared internal genes and the.For this pandemic, there were two geographically-distinct mortality patterns. Infection caused upper respiratory symptoms typical of influenza and produced symptoms of chills,The H3N2 virus that caused the 1968 pandemic is still in circulation today and is considered to be a strain of seasonal influenza. This was far fewer than the.Unlike the 1918–19 and 1957 flu pandemics, the 1968 pandemic was caused by an influenza virus that was only slightly different from earlier influenza strains. For example, whereas illness was diffuse and affected only small numbers of people in Japan, it was widespread and deadly in the United States. The outbreak in Hong Kong, where density is about 500 people per acre, reached maximum intensity in 2 weeks, lasting 6 weeks in total from July to December 1968, however worldwide deaths from this virus peaked much later, in December 1968 and January 1969. Influenza A viruses are negative sense, single-stranded, segmented RNA viruses. She joined Britannica in 2006 and...Get exclusive access to content from our 1768 First Edition with your subscription.…flu pandemic and the 1968 Hong Kong flu pandemic. Hong Kong flu is was not the only deadly disease outbreak to have hit the city. By the end of July 1968, extensive outbreaks were reported in Vietnam and Singapore.
Hong Kong flu was one of the famous influenza pandemics in history. ","Pandemics and Pandemic Threats since 1900",https://en.wikipedia.org/w/index.php?title=Hong_Kong_flu&oldid=977754193,Creative Commons Attribution-ShareAlike License,Some immunity against the N2 flu virus may have been retained in populations struck by the.The pandemic did not gain momentum until near the winter school holidays, thus limiting the infection's spread.This page was last edited on 10 September 2020, at 19:35. That same month, the virus entered California from returning Vietnam War troops but did not become widespread in the US until December 1968. The pandemic infected an estimated 500,000 Hong Kong residents, 15% of the population. What We Can Learn From The 1968 Hong Kong Flu Pandemic NPR's Lulu Garcia-Navarro talks with epidemiologist Ed Belongia about the Hong Kong flu that's still circulating today, and what it … The virus that caused the 1957 pandemic, which lasted until about the middle of 1958, was also responsible for a series of epidemics that emerged annually until 1968, when the Hong Kong flu appeared. For example, the annual flu subtype H3N2 no longer contains the strain that caused the Hong Kong Flu. Those over the age of 65 were most likely to die.In comparison to other pandemics, the Hong Kong flu yielded a low death rate, with a case-fatality ratio below 0.5% making it a category 2 disease on the Pandemic Severity Index.
In North America (the United States and Canada), the first pandemic season (1968/69) was more severe than the second (1969/70). The outbreak was the third influenza pandemic to occur in the 20th century; it followed the 1957 flu pandemic and the influenza pandemic of 1918–19. The Times newspaper was actually the first source to sound alarm regarding this new possible pandemic.By September 1968, the flu reached India, Philippines, northern Australia and Europe. The first recorded instance of the outbreak appeared on 13 July 1968 in,The outbreak in Hong Kong, where the population density was greater than 6,000 people per square kilometre, reached its maximum intensity in two weeks. In the 1990s a closely related H3N2 virus was isolated from pigs.
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