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Australia concerned by bird flu reporting

5/07/2008 12:03:00 AM
Australia has expressed strong concern that world health authorities could be unaware of Indonesia's efforts to combat the deadly bird flu virus after the recent decision to cut back on its reporting obligations.

The office of Health Minister Nicola Roxon has confirmed to The Canberra Times that Australian authorities sought clarification of Indonesia's policy on reporting human cases of avian influenza to the World Health Organisation.

This was after Indonesian Health Minister Siti Fadilah Supari announced in June that Indonesian authorities would no longer report individual human cases of bird flu to the WHO and would instead provide six-monthly reports.

Immediate reporting of bird flu or similar influenza cases is considered essential to quickly detect any human-to-human transmission of a virus that could be the beginning of a global pandemic.

To date, human-to-human transmission of the H5N1 virus has not been detected.

Diplomatic sources said Australia's disquiet about Dr Supari's statement was very clearly conveyed to Indonesian authorities.

A senior Australian health official involved in national pandemic planning said Indonesia's management of bird flu was severely deficient.

"Not much has been said publicly for obvious diplomatic reasons, but [the Indonesians] really can't manage this at all well," the official said.

"Their health authorities are weak, sometimes incompetent. There aren't enough veterinarians and too many backyard chickens. [Health Minister] Supari is off the planet on avian influenza. She really doesn't understand the issue.

"We'll probably learn about human-to-human transmission via a tourist returning to Australia long before the Indonesians report a case to the WHO. One day a pandemic will be upon us and it may well be incubated in the Jakarta slums."

News of the Australian Government's representations in Jakarta came as Australia hosted the World Poultry Congress in Brisbane with more than 2000 international delegates.

Dr Supari's June announcement attracted widespread criticism from international health experts who highlighted the importance of prompt reporting of new infections and warned that Indonesia would be in violation of International Health Regulations.

Nearly half (110) of the 243 human deaths from bird flu worldwide have occurred in Indonesia.

The death rate is much higher in Indonesia, with 110 deaths from 135 cases, compared with other Asian countries.

In Vietnam, 106 cases have led to 52 deaths.

Dr Supari has been at odds with the WHO and other countries about bird flu for more than a year.

She has refused to share Indonesian H5N1 virus samples with other countries, claiming foreign drug companies would use them to create vaccines that Indonesia couldn't afford.

Ms Roxon's office declined to say whether the Australian Government was satisfied with Indonesia's compliance with international health regulations, and noted that WHO assistant director-general for health security Dr David Heymann had said Indonesian authorities had told the WHO they would continue to report avian influenza cases.

Australian bird flu expert, Dr Andrew Turner, said earlier this week the risk bird flu might trigger a global pandemic was small, but health authorities had to be vigilant.

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This is really a very scary report. I'm alarmed by this development since we are such close neighbours to a possible bird flu incubation site. Can WHO put some pressure on Indonesia to report more frequently?
Posted by bamboozzled on 5/07/2008 7:33:56 AM
CUT THE CHAIN OF INFECTIONS ! Spread of avian flu by drinking water: Proved awareness to ecology and transmission is necessary to understand the spread of avian flu. For this it is insufficient exclusive to test samples from wild birds, poultry and humans for avian flu viruses. Samples from the known abiotic vehicles as water also have to be analysed. Proving viruses in water is difficult because of dilution. If you find no viruses you can not be sure that there are not any. On the other hand in water viruses remain viable for a long time. Water has to be tested for influenza viruses by cell culture and in particular by the more sensitive molecular biology method PCR. Transmission of avian flu by direct contact to infected poultry is an unproved assumption from the WHO. There is no evidence that influenza primarily is transmitted by saliva droplets: “Transmission of influenza A in human beings” http://www.thelancet.com/journals/laninf/article/PIIS1473309 907700294/abstract?iseop=true. There are clear links between the cold, rainy seasons as well as floods and the spread of influenza. There are clear links between avian flu and water, e.g. in Egypt to the Nile delta or in Indonesia to residential districts of less prosperous humans with backyard flocks of birds and without a central water supply as in Vietnam: http://www.cdc.gov/ncidod/EID/vol12no12/06-0829.htm. See also the WHO web side: http://www.who.int/water_sanitation_health/emerging/h5n1back ground.pdf. That is just why abiotic vehicles as water have to be analysed. The direct biotic transmission from birds, poultry or humans to humans can not depend on the cold, rainy seasons or floods. Water is a very efficient abiotic vehicle for the spread of viruses - in particular of fecal as well as by mouth, nose and eyes excreted viruses. Infected humans, mammals, birds and poultry can contaminate drinking water everywhere. All humans have very intensive contact to drinking water. Spread of avian flu by drinking water can explain small clusters in households too. Avian flu infections may increase in consequence to increase of virus circulation. Human to human and contact transmission of influenza occur - but are overvalued immense. In the course of influenza epidemics in Germany, recognized clusters are rare, accounting for just 9 percent of cases e.g. in the 2005 season. In temperate climates the lethal H5N1 virus will be transferred to humans via cold drinking water, as with the birds in February and March 2006, strong seasonal at the time when (drinking) water has its temperature minimum. The performance to eliminate viruses from the drinking water processing plants 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 regions influenza epidemics recur with marked seasonality around the end of winter, in the northern as well as in the southern hemisphere. Although seasonality is one of the most familiar features of influenza, it is also one of the least understood. Indoor crowding during cold weather, seasonal fluctuations in host immune responses, and environmental factors, including relative humidity, temperature, and UV radiation have all been suggested to account for this phenomenon, but none of these hypotheses has been tested directly. Influenza causes significant morbidity in tropical regions; however, in contrast to the situation in temperate zones, influenza in the tropics is not strongly associated with a certain season. In the tropics, flood-related influenza is typical after extreme weather. The virulence of influenza viruses depends on temperature and time. Especially in cases of local water supplies with “young” and fresh influenza-contaminated water from low local wells, cisterns, tanks, rain barrels, ponds, rivers or rice paddies, this pathway can explain small clusters in households, too. At 24°C, for example, in the tropics the virulence of influenza viruses in water exists for 2 days. In temperate climates with “older” water from central water supplies, the temperature of the water is decisive for the virulence of viruses. At 7°C the virulence of influenza viruses in water extends to 14 days. Ducks and rice (paddies = flooded by water) are major factors in outbreaks of avian flu, claims a UN agency: Ducks and rice fields may be a critical factor in spreading H5N1. Ducks, rice (fields, paddies = flooded by water; farmers at work drink the water from rice paddies) and people – not chickens – have emerged as the most significant factors in the spread of avian influenza in Thailand and Vietnam, according to a study carried out by a group of experts from the United Nations Food and Agriculture Organization (FAO) and associated research centres. See http://www.un.org/apps/news/story.asp?NewsID=26096&Cr=&Cr1 The study “Mapping H5N1 highly pathogenic avian influenza risk in Southeast Asia: ducks, rice and people” also concludes that these factors are probably behind persistent outbreaks in other countries such as Cambodia and Laos. This study examined a series of waves of H5N1, a highly pathogenic avian influenza, in Thailand and Vietnam between early 2004 and late 2005. Through the use of satellite mapping, researchers looked at several different factors, including the numbers of ducks, geese and chickens, human population size, rice cultivation and geography, and found a strong link between duck grazing patterns and rice cropping intensity. In Thailand, for example, the proportion of young ducks in flocks was found to peak in September-October; these rapidly growing young ducks can therefore benefit from the peak of the rice harvest in November-December, at the beginning of the cold: Thailand, Vietnam, Cambodia, Laos – as opposed to Indonesia – are located in the northern hemisphere. These peaks in the congregation of ducks indicate periods in which there is an increase in the chances for virus release and exposure, and rice paddies often become a temporary habitat for wild bird species. In addition, with virus persistence becoming increasingly confined to areas with intensive rice-duck agriculture in eastern and south-eastern Asia, the evolution of the H5N1 virus may become easier to predict. Dipl.-Ing. Wilfried Soddemann - Epidemiologist - Free Science Journalist soddemann-aachen@t-online.de http://www.dugi-ev.de/information.html
Posted by Dipl.-Ing. Wilfried Soddemann on 5/07/2008 4:42:45 PM

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