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:6/25/2016)... ... , ... Austin residents seeking Mohs surgery services, can now turn to Dr. ... Russell Peckham for medical and surgical dermatology. , Dr. Dorsey brings specialization to include ... in Mohs Micrographic Surgery completed by Dr. Dorsey was under the direction of Glenn ...
(Date:6/25/2016)... , ... June 25, 2016 , ... ... and non-athletes recover from injury. Recently, he has implemented orthobiologic procedures as a ... area —Johnson is one of the first doctors to perform the treatment. Orthobiologics ...
(Date:6/24/2016)... ... , ... June 19, 2016 is World Sickle Cell Observance Day. In an ... of holistic treatments, Serenity Recovery Center of Marne, Michigan, has issued a ... Cell Disease (SCD) is a disorder of the red blood cells, which can cause ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, ... and the Road To Recovery® program to drive cancer patients to and from their ... to ensure the highest quality of life and ongoing independence. Getting to and ...
(Date:6/24/2016)... Vegas, Nevada (PRWEB) , ... June 24, 2016 ... ... Las Vegas client, The Grove Investment Group (TGIG), has initiated cultivation and processing ... Grove, in Las Vegas and Pahrump, Nevada. , Puradigm is the manufacturer of ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... June 27, 2016 Jazz Pharmaceuticals plc (Nasdaq: ... under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as ... Celator Pharmaceuticals, Inc. ("Celator"; Nasdaq: CPXX ) ... Daylight Time). As previously announced on May ... definitive merger agreement under which Jazz Pharmaceuticals has commenced ...
(Date:6/24/2016)... June 24, 2016  Collagen Matrix, Inc., ("Collagen ... and manufacturing of collagen and mineral based medical ... that Bill Messer has joined the ... further leverage the growing portfolio of oral surgery, ... Bill joins the Collagen Matrix executive team ...
(Date:6/24/2016)... , June 24, 2016 ... the "Structural Electronics 2015-2025: Applications, Technologies, Forecasts" ... In-Mold Electronics, Smart Skin, Structural ... Structural electronics involves electronic and/or ... protective structures, replacing dumb structures such as vehicle ...
Breaking Medicine Technology: