Father Of Bird Flu Victim Also Infected Say Authorities In China
Featured ArticleMain Category: Bird Flu / Avian Flu
Also Included In: Respiratory / Asthma
Article Date: 08 Dec 2007 - 10:00 PDT
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After a patient died of bird flu H5N1 infection last week, authorities in China have confirmed that his father, 52, is also infected. Both patients lived in Nanjing, Jiangsu province.
The father is said to have a fever and has been hospitalized. It is still not known how the father (or the son) became infected. The virus could either have got into him via a bird, or perhaps from his son. These two infections are an enigma for health experts as neither the son nor the father had any physical contact with birds - in fact, there have been no recent reports of H5N1 poultry outbreaks in the province.
There are more chickens, and poultry in general in China, than anywhere else in the world. The country also has tens of millions of backyard birds. It is known that areas where the population of backyard birds is high are especially vulnerable to the spread of H5N1 as it is more difficult to take precautionary measures effectively and swiftly in these areas. In many parts of the world people keep backyard birds to supplement their very limited supply of food - when faced with the prospect of going hungry they are much less likely to cooperate with the authorities.
H5N1 is a strain of the bird flu virus - the strain everyone is worried about because humans have no immunity against it, it is very virulent (strong and dangerous).
So far, a total of twenty-seven people in China have become infected with H5N1.
Scientists fear that the H5N1 bird flu virus strain will eventually mutate and become easily human transmissible. This has not happened yet. It is still extremely difficult for birds to infect humans, and even harder for a human to infect another human.
It is believed that one of the ways H5N1 could mutate would be by infecting a person who is sick with the normal human flu virus. The bird flu virus would then have the opportunity to exchange genetic information with the bird flu virus and acquire its ability to spread easily from human-to-human (become easily human transmissible). If this happened, we could be facing a serious, global flu pandemic.
If we can keep the number of outbreaks among birds down to a minimum, then the number of humans becoming infected is also low - giving the bird flu virus fewer opportunities to mutate.
Written by - Christian Nordqvist
Copyright: Medical News Today
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H5N1 Avian Flu: Spread By Drinking Water Into Small Clusters
posted by Dipl.-Ing. Wilfried Soddemann on 9 Dec 2007 at 12:37 amH5N1 avian flu: Spread by drinking water into small clusters:
Human to human and contact transmission of influenza occur - but are overvalued immense. In the course of Influenza epidemics in Germany recognized clusters are rarely (9% of the cases in the season 2005).
In temperate climates the lethal H5N1 avian flu virus will be transferred to humans strong seasonal in the cold via cold drinking water, as with the birds feb/mar 2006.
Recent research must worry: So far the virus had to reach the bronchi and the lungs in order to infect humans. Now it infects the upper respiratory system (mucous membranes of the throat e.g. when drinking and mucous membranes of the nose and probably also the conjunctiva of the eyes as well as the eardrum e.g. at showering). In a few cases (Viet Nam, Thailand) stomach and intestine by the H5N1 virus were stricken but not the bronchi and the lungs. The virus might been orally taken up, e.g. when drinking contaminated water.
The performance to eliminate viruses of the drinking water processing plants in Germany regularly does not meet the requirements of the WHO and the USA/USEPA. Conventional disinfection procedures are poor, because microorganisms in the water are not in suspension, but embedded in particles. Even ground water used for drinking water is not free from viruses.
In temperate climates the strong seasonal waterborne infections like norovirus, rotavirus, salmonellae, campylobacter and - differing from the usual dogma - influenza are mainly triggered by drinking water dependent on the drinking water temperature (in Germany minimum feb/mar – maximum august). There is no evidence that influenza primary is transmitted by saliva droplets. In temperate climates the strong interdependence between influenza infections and environmental temperatures can’t be explained with the primary biotic transmission by saliva droplets from human to human with temperatures of 37.5°C. There must be an abiotic vehicle like cold drinking water. There is no other appropriate abiotic vehicle. In Germany about 98% of inhabitants have a central public water supply with older and better protected water. Therefore in Germany cold water is decisive to virulence of viruses.
In hot climates/tropics the flood-related influenza is typical after extreme weather and natural after floods. Virulence of Influenza virus depends on temperature and time. If young and fresh H5N1 contaminated water from low local wells, cisterns, tanks, rain barrels or rice fields is used for water supply water temperature for infection may be higher as in temperate climates.
Dipl.-Ing. Wilfried Soddemann
eMail soddemann-aachen@t-online.de
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