By allowing ads to appear on this site, you support the local businesses who, in turn, support great journalism.
New strain of flu found in bats
Risk to humans not determined yet
Placeholder Image

Online: Journal: http://www.pnas.org

ATLANTA - For the first time, scientists have found evidence of flu in bats, reporting a never-before-seen virus whose risk to humans is unclear.

The surprising discovery of genetic fragments of a flu virus is the first well-documented report of it in the winged mammals. So far, scientists haven't been able to grow it, and it's not clear if - or how well - it spreads.

Flu bugs are common in humans, birds and pigs and have even been seen in dogs, horses, seals and whales, among others. About five years ago, Russian virologists claimed finding flu in bats, but they never offered evidence.

"Most people are fairly convinced we had already discovered flu in all the possible" animals, said Ruben Donis, a Centers for Disease Control and Prevention scientist who co-authored the new study.

Scientists suspect that some bats caught flu centuries ago and that the virus mutated within the bat population into this new variety. Scientists haven't even been able to grow the new virus in chicken eggs or in human cell culture, as they do with more conventional flu strains.

But it still could pose a threat to humans. For example, if it mingled with more common forms of influenza, it could swap genes and mutate into something more dangerous, a scenario at the heart of the global flu epidemic movie "Contagion."

The research was posted online Monday in the journal Proceedings of the National Academy of Sciences.

The CDC has an international outpost in Guatemala, and that's where researchers collected more than 300 bats in 2009 and 2010. The research was mainly focused on rabies, but the scientists also checked specimens for other germs and stumbled upon the new virus. It was in the intestines of little yellow-shouldered bats, said Donis, a veterinarian by training.

These bats eat fruit and insects but don't bite people. Yet it's possible they could leave the virus on produce and a human could get infected by taking a bite.

It's conceivable some people were infected with the virus in the past. Now that scientists know what it looks like, they are looking for it in other bats as well as humans and other animals, said Donis, who heads the Molecular Virology and Vaccines Branch in the CDC's flu division.

At least one expert said CDC researchers need to do more to establish they've actually found a flu virus.

Technically, what the CDC officials found was genetic material of a flu virus. They used a lab technique to find genes for the virus and amplify it.

All they found was a segment of genetic material, said Richard "Mick" Fulton, a bird disease researcher at Michigan State University.

What they should do is draw blood from more bats, try to infect other bats and take other steps to establish that the virus is spreading among the animals, he continued. "In my mind, if you can't grow the virus, how do you know that the virus is there?"

Donis said work is going on to try to infect healthy bats, but noted there are other viruses that were discovered by genetic sequencing but are hard to grow in a lab, including hepatitis C.

 

Sign up for our e-newsletters
From the book 'Outliers' comes proof that good health is more than just genetics
8ccd7d661f85d37c8298791c9a56bec6e0f8449d4aea5c09c6ffcf527854f186
Friends Jim Young, left, Mike Natale, Jeff Natale and Ryan Kiernan were on Greenwich High School football team together and Jim and Mike were captains. Jim, who was the youngest in Sherry Young's family, was welcome in the homes of the other three boys who still had siblings around and grandparents near. - photo by Sherry Young
As I look back on my life and the lives of others, both personally and in the reading I have done, I am convinced of the necessity of positive human contact in our lives. We are doubly blessed when we are able to make good friends or are a part of a family where we are accepted and loved.

Malcolm Gladwell in his book Outliers tells of a time in the 1950s when Dr. Stewart Wolf met a physician who practiced in the area of Roseto, Pennsylvania. Roseto was settled by a group of Italian families from Roseto, Italy, who re-created their life again in America.

This was in the 1950s before drugs and measures to prevent heart disease became important. In their conversation the physician said, You know, Ive been practicing for 17 years. I get patients from all over, and I rarely find anyone from Roseto under the age of 65 with heart disease.

Wolf was surprised by these words as, It was impossible to be a doctor, common sense said, and not see heart disease.

Wolf enlisted the aid of a sociologist and friend John Bruhn to help him. They found, There was no suicide, no alcoholism, no drug addiction, and very little crime. They didnt have anyone on welfare. Then we looked at peptic ulcers. They didnt have any of those either. These people were dying of old age. Thats it.

They checked into diet, genetics and possibilities of something in the foothills of eastern Pennsylvania but nothing made sense.

What they found was that Rosetans visited one another, stopping to chat in Italian on the street, say, or cooking for one another in their backyards. (Researchers) learned about the extended family clans that underlay the towns social structure. They saw how many homes had three generations living under one roof and how much respect grandparents commanded. They went to Mass at Our Lady of Mount Carmel and saw the unifying and calming effect of the church. They counted 22 separate civic organizations in a town of just under 2,000 people. They picked up on the particular egalitarian ethos of the community, which discouraged the wealthy from flaunting their success and helped the unsuccessful obscure their failures.

What they found eventually convinced the medical establishment to look beyond the individual and understand the culture people are part of their friends, families and town they came from. They determined that the people we surround ourselves with and the values of the world we inhabit have a profound effect on who we are.

Likely, this study could have been done with other ethnicities. However, my family's experiences with the Italian families in Connecticut ring true to the study. Our hungry and growing sons, especially our youngest son, Jim, who was left home alone with two beady-eyed parents, all had some memorable experiences being fed and loved in the Cos Cob multigenerational families. Proof of the African proverb, It takes a village to raise a child.

We live in an age when the contact we have with people often is on the internet, and many of us live among strangers. Unless we make the effort to reach out, we will become isolated, especially as we age. The Rosetan study is proof that reaching out and communicating may be good for our health.
Latest Obituaries