Detection of three new human infections with the deadly H5NI strain of bird flu in a week has set alarm bells ringing as scientists have found evidence of the virus in the live-bird market in crowded Dhaka.
The Institute of Epidemiology, Disease Control and Research (IEDCR) confirmed a human case on Feb 26 when a worker of a live-bird market in southern part of the capital was tested H5N1 positive at the IEDCR's surveillance site.
Its director Prof Mahmudur Rahman told that they had informed the government's Department of Livestock right away and suggested 'immediate' steps to disinfect wet markets.
bdnews24.com saw no cleaning drive but learned the livestock department fixed a technical committee meeting for Wednesday instead of beginning to disinfect the market.
In the meantime, the IEDCR that oversees human infections of bird flu disclosed on Monday that another two cases were confirmed on Sunday night in their lab.
"They are also live-bird market workers," Prof Rahman told and added that they expected the livestock department to move quickly for the sake of public health safety.
"The virus's presence in live-bird market means it is now even closer to people," he added.
A scientist with the IEDCR told that they had run into evidence suggesting presence of the H5N1 virus in the live-bird market's garbage, as well.
The virus has the potential to cause severe illness in human with a high fatality rate.
"We are lucky as the strain (clade 2.2) of H5N1 that circulates in Bangladesh is less virulent, but it can change into another class (2.1), which is highly infectious to human," the IEDCR director said.
According to World Health Organisation, across the globe H5N1 killed 349 out of its 592 victims, except the latest two detected in Bangladesh.
Livestock authorities could not be reached immediately.
Chief veterinary officer Mosaddek Hossain, who oversees poultry infections of bird flu, declined comment when approached him at around 6.30pm.
Prof Nitish C Debnath, FAO expert on avian influenza, told that the government should launch 'wet market cleaning' drive at this moment.
"All should be vigilant to prevent sick poultries from entering into the market," he warned.
With four strains of flu virus – H5N1, H1N1, H3N2 and H9N2 – circulating in Bangladesh, the Food and Agriculture Organisation in Aug last year warned of a possible major resurgence of bird flu.
It said a mutant strain of the H5N1 virus is spreading in Asia including Bangladesh.
The government has confirmed first case of human infection with H5N1 in 2008, and two cases were reported in 2011.
IEDCR advises people wash egg shells and suggests consuming well-cooked poultry products.
It also urged not to litter giblets and dead birds just anywhere and maintain personal hygiene – cough into the crook of elbow and wash hands with soap often.
The first human infection from H5N1 was detected in 1997 in Hong Kong.
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Bangladesh will share a new strain of bird flu virus, identified as a possible pandemic threat, with US Centres for Disease Control and Prevention (US CDC) to develop 'seed virus,' key ingredient to make a vaccine in emergency.
"We will share the vaccine for scientific use," health secretary Muhammad Humayun Kabir told on Sunday as he confirmed about the sharing of the H9N2 strain of bird flu—A/Bangladesh/0994/2011 (H9N2).
The strain was found in humans in March and recently confirmed by US CDC after its sequencing.
The Institute of Epidemiology Disease Control and Research (IEDCR) has detected the virus, mild in nature, through its countrywide surveillance.
"But it has the potential to be a pandemic threat," IEDCR director Prof Mahmudur Rahman said, sounding the alarm, as the virus can reassort with H5N1—also 'widespread' in the country—with its changing strains.
"If clades 2.2; 3.2 of H5N1 and new H9N2 mutate, it can be devastating," he said, "but nothing can be predicted about virus."
The United Nations warned Bangladesh on Aug 29 of a possible major resurgence of bird flu as it observed a mutant strain of the H5N1 virus is spreading in Asia and elsewhere.
To keep the infection away
# Consume well-cooked poultry products
# Maintain personal hygiene – cough into the crook of elbow and wash hands with soap often
#Don't litter giblets and dead birds just anywhere
The IEDCR director suggested maintaining bio-security in poultry farms that livestock officials said cannot be ensured due to 'a large number of backyard poultry in Bangladesh.'
"But we are taking new strategies for backyard poultry," Dr Md Mehedi Hossain, senior scientific officer, Department of Livestock Services (DLS), said on Sunday at a seminar jointly organised by IEDCR and Unicef at IEDCR office.
According to IEDCR, the government would share the virus under standard procedure of virus sharing coordinated by the World Health Organization.
"We will get access to affordable vaccines derived from them and other technical support in exchange (for the new strain of virus)," Prof Rahman said.
"They (US CDC) approached us in the first week of September for government permission to use the virus. They already have the virus with them as we have sent it for confirmation."
He said the virus is also circulating in some countries, but in Bangladesh it is different.
The DLS scientist said they would prepare a guideline for backyard poultry.
"We will sensitise backyard farmers about how to dispose of debris and faeces," Dr Hossain said and added that people litter chickens' giblets and dead chickens just anywhere that can spread the virus.
"Crows eat those carcasses and can get the virus and die. Those dead crows can again pass the virus to poultry birds in the same way," Dr Hossain explained.
The livestock department has culled over 2.4 million chickens across the country after the first outbreak in Mar 22, 2007.
Some 524 outbreaks have been recorded so far.
"We observe that we cannot control the virus until we make people aware, we motivate them," said Dr Musaddique Hossain, a director of the DLS.
The IEDCR advised people consume well-cooked poultry products and maintain personal hygiene - cough into the crook of elbow and wash hands with soap often - to keep bird flu infection away.
very very hot news
Bangladesh will share a new strain of bird flu virus, identified as a possible pandemic threat, with US Centres for Disease Control and Prevention (US CDC) to develop 'seed virus,' key ingredient to make a vaccine in emergency.
"We will share the vaccine for scientific use," health secretary Muhammad Humayun Kabir told as he confirmed about the sharing of the H9N2 strain of bird flu—A/Bangladesh/0994/2011 (H9N2).
The strain was found in humans in March and recently confirmed by US CDC after its sequencing.
The Institute of Epidemiology Disease Control and Research (IEDCR) has detected the virus, mild in nature, through its countrywide surveillance.
"But it has the potential to be a pandemic threat," IEDCR director Prof Mahmudur Rahman said, sounding the alarm, as the virus can reassort with H5N1—also 'widespread' in the country—with its changing strains.
"If clades 2.2; 3.2 of H5N1 and new H9N2 mutate, it can be devastating," he said, "but nothing can be predicted about virus."
The United Nations warned Bangladesh on Aug 29 of a possible major resurgence of bird flu as it observed a mutant strain of the H5N1 virus is spreading in Asia and elsewhere.
The IEDCR director suggested maintaining bio-security in poultry farms that livestock officials said cannot be ensured due to 'a large number of backyard poultry in Bangladesh.'
"But we are taking new strategies for backyard poultry," Dr Md Mehedi Hossain, senior scientific officer, Department of Livestock Services (DLS), said on Sunday at a seminar jointly organised by IEDCR and Unicef at IEDCR office.
According to IEDCR, the government would share the virus under standard procedure of virus sharing coordinated by the World Health Organization.
"We will get access to affordable vaccines derived from them and other technical support in exchange (for the new strain of virus)," Prof Rahman said.
"They (US CDC) approached us in the first week of September for government permission to use the virus. They already have the virus with them as we have sent it for confirmation."
He said the virus is also circulating in some countries, but in Bangladesh it is different.
The DLS scientist said they would prepare a guideline for backyard poultry.
"We will sensitise backyard farmers about how to dispose of debris and faeces," Dr Hossain said and added that people litter chickens' giblets and dead chickens just anywhere that can spread the virus.
"Crows eat those carcasses and can get the virus and die. Those dead crows can again pass the virus to poultry birds in the same way," Dr Hossain explained.
The livestock department has culled over 2.4 million chickens across the country after the first outbreak in Mar 22, 2007.
Some 524 outbreaks have been recorded so far.
"We observe that we cannot control the virus until we make people aware, we motivate them," said Dr Musaddique Hossain, a director of the DLS.
The IEDCR advised people consume well-cooked poultry products and maintain personal hygiene - cough into the crook of elbow and wash hands with soap often - to keep bird flu infection away.