Navigation Links
CDC Preparing Vaccine for New Swine Flu
Date:8/4/2012

By Steven Reinberg
HealthDay Reporter

FRIDAY, Aug. 3 (HealthDay News) -- Only 29 human cases of a new strain of "swine" flu have been identified in two years, but the U.S. Centers for Disease Control and Prevention is making sure it's prepared should the H3N2 strain become more widespread.

"This virus is still principally a swine virus, but it doesn't seem to have onward spread. It's still not a human virus," Dr. Joseph Bresee, from the CDC's influenza division, stressed during a noon press conference Friday.

"Even so, a H3N2 candidate vaccine has been prepared and clinical trials are being planned for this year," he said.

The reason the CDC is concerned about this particular virus is that it contains an element seen in the pandemic 2009 swine flu strain, H1N1, which may make it more likely for the virus to spread from person-to-person.

All 29 cases were infected with strains of H3N2 "that contained the matrix (m) gene from the influenza A H1N1 pandemic virus," Bresee explained. "This 'm' gene may confer increased transmissibility to and among humans, compared with other variant influenzas viruses."

In addition, the virus appears to have become more active recently, the CDC said. "The virus was first detected in humans in July 2011, and since then there have been 29 total cases of H3N2 variant virus detected, including the 16 cases occurring in the last three weeks," Bresee said.

Of the 12 cases reported this week, 10 were from Ohio and one each came from Hawaii and Indiana, the CDC said.

According to Bresee, "29 cases of infection with this H3N2 virus since 2011 is a significant increase for these types of viruses that we have seen in recent years."

Flu viruses commonly circulate in pigs, Bresee noted. But they are generally different from those that spread to people. Sometimes these viruses can spread to people, however, which happens most often when someone comes into close contact with an infected animal, he explained.

"Swine influenza viruses have not been shown to be transmissible to people through eating, or handling pork or other products derived from pigs. It is not a food-borne disease," Bresee said.

Each of the recent 16 cases were among people who had direct contact with pigs. In 15 cases, contact happened at a county fair, he added.

It may yet be possible, however, to transmit this virus from one infected person to another, Bresee said.

No human-to-human transfer of the virus occurred in the more recent cases, Bresee said, although scientists did find evidence of limited human-to-human transmission in three cases in 2011.

Fortunately, sustained person-to-person transmission of the virus hasn't happened yet, he added.

Of the 16 new cases, 13 arose in children, according to the CDC. Studies indicate that children may be more susceptible to the infection than adults, as occurred during the 2009-2010 pandemic H1N1 flu outbreak, Bresee said.

Right now, there is no cause for alarm, the CDC said. Symptoms of this flu are similar to seasonal flu, none of the recent 16 cases required hospitalization and there were no deaths. This flu did hospitalize three people with underlying disease last year, he noted.

"We expect more cases from contact with pigs and through limited human-to-human spread," Bresee said. "We also suspect that some of the cases might be severe."

Reported cases usually represent a small number of actual cases, since most people don't see a doctor and many doctors don't report flu cases.

Bressee said, however, it's too early to hazard a guess about how many cases of this flu there might actually be.

"Because influenza viruses are always evolving, we will watch closely for signs that the virus has gained capacity for efficient and sustained human-to human transmission," Bresee said.

"Thus far, we have not seen this type of transmission and therefore are not seeing features consistent with an influenza pandemic."

To prevent contracting this flu, the CDC advises people to limit their contact with swine and avoid contact with sick swine. People who have contact with these animals should take precautions such as washing their hands, not eating or drinking in areas with swine and controlling their cough.

More information

For more on H3N2 flu, visit the U.S. Centers for Disease Control and Prevention.

SOURCES: Aug. 3, 2012, press conference with: Joseph Bresee, M.D., influenza division, U.S. Centers for Disease Control and Prevention


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Poor Sleep Hampers Vaccine Effectiveness: Study
2. Is Improved Vaccine Causing Whooping Cough Outbreaks?
3. Sleep affects potency of vaccines
4. NIDA supports development of combined anti-heroin and HIV vaccine
5. Scientists explore new class of synthetic vaccines
6. Mount Sinai researchers discover new target for vaccine development in abundant immune cells
7. Researchers study vaccine as potential weapon against aggressive brain tumors
8. Duke receives new grant for AIDS vaccine research
9. Parental consent for HPV vaccine should not be waived, poll says
10. Antibodies for new rotavirus vaccines
11. H1N1 Flu Vaccine Safe for Expectant Moms, Offspring: Study
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
CDC Preparing Vaccine for New Swine Flu
(Date:9/20/2017)... NC (PRWEB) , ... September 20, 2017 , ... ... Transformation and Centers of Excellence (CoE) with the latest Artificial Intelligence (AI) thinking, ... designed presence offers quick and easy access to essential information that offers a ...
(Date:9/20/2017)... GLENDALE, Calif. (PRWEB) , ... September 20, 2017 ... ... 15th year of providing a voice for people who have kidney disease. The ... many writers to share their stories. Entrants needed to meet only one ...
(Date:9/20/2017)... ... 2017 , ... Mirror Mirror Beauty Boutique is excited to ... Autumn with CoolSculpting®. Scheduled for Thursday, September 28th, the afternoon will include live ... Boutique is Houston’s largest CoolSculpting provider, holding the prestigious title of ...
(Date:9/20/2017)... ... 20, 2017 , ... As part of The Garland Company, ... redesigned website. The new site – still located at http://www.garlandco.com – ... other industry users that Garland serves. , After an ambitious phase of industry ...
(Date:9/20/2017)... ... September 20, 2017 , ... In just a short time since going ... receiving positive feedback from customers trying the product for the first time, and others ... was developed by neurosurgeon Shawn Moore, MD, for everyone from athletes at risk from ...
Breaking Medicine News(10 mins):
(Date:9/6/2017)... Sept. 6, 2017  Medical professionals are ... skills while treating their patients. Medical simulations ... without involving patients. Simulation provides a safe ... carry out procedures, refine techniques and build ... of new technology, such as augmented reality, ...
(Date:9/5/2017)... Sapheneia and Scannerside received FDA 510(k) clearance ... a third-party Vendor neutral CT product that makes it ... with current MITA standards. ... is specifically designed to provide CT operators, prior to ... over a predefined threshold. Scannerside Dose Check is intended ...
(Date:9/5/2017)... -- Oramed Pharmaceuticals Inc. (NASDAQ: ORMP ) ... focused on the development of oral drug delivery systems, ... with the U.S. Food and Drug Administration (FDA) regarding ... At the meeting, the FDA ... of ORMD-0801, would be a Biologics License Application (BLA).  ...
Breaking Medicine Technology: