Navigation Links
No Evidence That New Bird Flu Passes Between People: Study

THURSDAY, April 25 (HealthDay News) -- A new study is the first to confirm that the H7N9 bird flu virus is passed from birds to people. But the study did not find evidence of person-to-person transmission.

In the study, Chinese scientists provide details about four cases of human H7N9 infection in the eastern Zhejiang province. All four patients had been exposed to poultry, either through their jobs or by visiting poultry markets.

The study authors tested samples taken from 20 chickens, four quails, five pigeons and 57 ducks at six poultry markets where the patients were likely to have been. Two of the five pigeons and four of the 20 chickens tested positive for H7N9, but the virus was not found in any of the ducks or quails tested.

Then researchers analyzed the genetic makeup of H7N9 viruses from one of the patients and one of the chickens and found similarities between the viruses, confirming that the H7N9 virus can be transmitted from poultry to people, according to the study published online April 25 in The Lancet.

The scientists also tracked 385 family members, co-workers and health care staff who had unprotected contact with the patients. None of them showed any symptoms of H7N9 infection over 14 days of follow-up, which suggests that the virus currently cannot be spread among people.

However, there is evidence that the H7N9 virus has developed some genetic characteristics that adapt it specifically to infection in mammals. Further genetic changes might enable the virus to be transmitted from person-to-person, the researchers noted.

"Overall, the evidence, in terms of epidemiology and virology, suggests that it is a pure poultry-to-human transmission, and that controlling [the epidemic in humans] will therefore depend on controlling the epidemic in poultry," study co-lead author Kwok-Yung Yuen, of the University of Hong Kong, said in a Lancet news release.

That would include measures such as temporary closure of live bird markets, comprehensive programs of surveillance, culling and segregation of poultry species, and possibly vaccination of poultry.

World Health Organization (WHO) officials said Wednesday that they are concerned about the ability of the H7N9 virus to jump from birds to humans and to infect birds without causing obvious symptoms, according to the Associated Press.

"This is definitely one of the most lethal influenza viruses we have seen so far," Dr. Keiji Fukuda, the top influenza expert at WHO, said during a briefing in Beijing. However, a large number of milder cases may also be going undetected, he added. WHO officials investigated the H7N9 cases with Chinese authorities this week, the AP reported.

More than 100 people in China have been infected with the H7N9 virus, with most getting seriously sick and more than 20 dying, the AP noted. The first case in Taiwan was confirmed on Wednesday, a 53-year-old man who became sick after returning from a visit to the eastern Chinese province of Jiangsu.

More information

The U.S. Centers for Disease Control and Prevention has more about the H7N9 virus.

-- Robert Preidt

SOURCES: The Lancet, news release, April 25, 2013; Associated Press

Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Researchers find evidence of banned antibiotics in poultry products
2. Report says new evidence could tip the balance in aspirin cancer prevention care
3. More Evidence Bilingualism Aids Thinking Skills
4. Novel biomarkers reveal evidence of radiation exposure
5. Antiretroviral treatment for preventing HIV infection: an evidence review for physicians
6. WSU study finds overwhelming evidence of hidden heart disease in hypertensive African-Americans
7. Study shows no evidence medical marijuana increases teen drug use
8. Study of Retired NFL Players Finds Evidence of Brain Damage
9. New evidence for link between obesity and circle of friends
10. Cochrane finds no reliable evidence on effectiveness of electric fans in heatwaves
11. Study Gives First Evidence That Adult Human Lungs Can Regrow
Post Your Comments:
Related Image:
No Evidence That New Bird Flu Passes Between People: Study
(Date:10/13/2015)... ... 2015 , ... Tempe Dental Care, a leading Tempe dentists’ office, celebrates offering ... dentistry for more than 5 years. A leading cause of emergency room visits, ... treatment is not timely. , Sedation dentistry provides an anxiety-free dental ...
(Date:10/13/2015)... ... ... According to an ESPN report published on October 1, Chicago ... him in the left eye during the first day of practice for the season ... of setbacks, including a knee injury that has interfered with his ability to stay ...
(Date:10/13/2015)... ... October 13, 2015 , ... ... developed valuable new strategies for enrolling and serving insurance consumers who do not ... health insurance and pay monthly premiums. In “Health Plan Engagement Strategies: The ABCs ...
(Date:10/13/2015)... ... October 13, 2015 , ... Just under three months ... eMarketing Concepts began a $1 promotion – effectively offering all of their services for ... within weeks the company was flooded with phone calls from interested buyers. As a ...
(Date:10/13/2015)... ... , ... The Bill Howe Family of Companies is an award winning HVAC ... remediation services. Family-owned and operated for 35 years, they have maintained value, ethics and ... two years in a row from the Union Tribune Reader’s Poll, a Healthiest Company ...
Breaking Medicine News(10 mins):
(Date:10/12/2015)... 2015 Given the intricacy of the ... to deliver an ophthalmic drug effectively to a specific ocular ... ocular drug delivery. These include dilution of a drug by ... conjunctiva and drug permeation issues with respect to the cornea, ... eye drops, is lost due to the aforementioned barriers. ...
(Date:10/12/2015)... N.J. , Oct. 12, 2015  Shareholder rights ... a securities fraud class action complaint was filed in ... Jersey.  The complaint alleges that officers and directors of ... Act of 1934 between September 15, 2015 and October ... about Amicus Therapeutics, business prospects.  Amicus is a biopharmaceutical ...
(Date:10/12/2015)... 12, 2015  Millions of smokers worldwide have used ... of tobacco. An April 2015 study released ... showed electronic cigarettes to be up to 95 percent ... a decade after the technology was first introduced the ... --> --> Palm ...
Breaking Medicine Technology: