What to do:
1. If you are not ill, avoid crowds in public places until the scope of this illness is more clear.
2. If you have not had a flu vaccine for the 2008 - 2009 season, consider being vaccinated. There is no current data about the effectiveness of this strategy, but there is also little or no downside. Quoted in a Bloomberg news report, one virologist has suggested that there may be benefit:
"The dominant form of flu circulating in the U.S. in the most recent flu season was an H1N1, said Frederick Hayden, professor of clinical virology at the University of Virginia Health Sciences Center in Charlottesville. That suggests that people who got this year’s flu vaccine, which gave protection against the H1N1 virus, might also have some protection against the swine flu, he said."
3. If you have a flu-like illness and are concerned about whether you've contracted the Swine Flu, first, do not panic. There have been no deaths in the United States to date and only one patient has reportedly been hospitalized briefly. If you have had recent symptom onset, particularly if you've recently traveled to Mexico, call your physician to discuss possible tests to determine whether you have an influenza virus infection and if so, how best to proceed.
The most recent WebMD report discusses today's public health emergency declaration:
CDC Has Reports of at Least 20 People in the U.S. Sickened by Swine Flu
April 26, 2009 -- The U.S. government today declared the swine flu outbreak a public health emergency. Swine flu has sickened at least 20 people in the U.S., by the CDC's latest count.
"We are declaring today a public health emergency," Secretary of Homeland Security Janet Napolitano said today at a White House news briefing. That declaration is "standard operating procedure," Napolitano said. "It is similar to what we do when we see a hurricane approaching a site. The hurricane might not actually hit but allows you to take a number of preparatory steps. We really don't know ultimately what the size or seriousness of this outbreak is going to be."
As part of the emergency, the Department of Homeland Security is releasing 25% of stockpiled antivirals -- Tamiflu and Relenza -- to the states.
Here's what officials want you to do: Stay home if you're sick, avoid close contact with people who are sick, wash your hands often, avoid touching your eyes, nose, and mouth, and cover your mouth or nose with a tissue when coughing or sneezing.
The CDC has gotten reports of lab-confirmed swine flu cases in eight people in New York City, seven people in California, two in Texas, two in Kansas, and one in Ohio.
All of those swine flu cases have been relatively mild, although one person was briefly hospitalized, according to Keiji Fukuda, MD, assistant director-general for health security and environment at the World Health Organization.
The eight swine flu cases in New York City involved students at Saint Francis Preparatory School in Queens. All have recovered fully, according to a news release from the New York City Department of Health and Mental Hygiene.
So far, U.S. cases of swine flu have been milder than those seen in Mexico, where the World Health Organization has confirmed that at least 20 people have died from swine flu; health officials are investigating dozens more deaths in Mexico.
CDC officials yesterday said they expected more swine flu cases to be reported as public health officials heighten their hunt for the new strain of swine flu virus, which is a mix of swine, human, and bird flu viruses.
Countries around the world are watching for the virus, and scientists are scrambling to learn more about the virus and stop it before it becomes a pandemic.
Fukuda says the global health community is taking the swine flu threat "very seriously" but wants more information before deciding whether to raise the WHO's pandemic alert level from phase 3 to phase 4.
An influenza pandemic occurs when a new influenza type A virus emerges for which there is little or no immunity in the human population, begins to cause serious illness, and then spreads easily from person to person worldwide, according to background information from the U.S. Department of Health and Human Services.
The WHO has a scale ranging from phase 1 (low risk of a flu pandemic) to phase 6 (a full-blown pandemic is under way).
Symptoms of swine flu seen in U.S. patients so far have been "relatively nonspecific -- high fever, cough sore throat, muscle aches, possibly vomiting and diarrhea in some numbers," says Schuchat.
The problem is, those symptoms aren't unique to swine flu.
They "can be caused by so many different things," Schuchat says, which makes it "impossible" for a patient to tell if they have swine flu, as opposed to another flu virus or a different illness.
"This is a dilemma, a challenge, we're wrestling with," says Schuchat. She encourages patients to use their judgment about whether they're sick enough to see a doctor, and to definitely do so if they've recently been to a high-risk area, such as Mexico.
Schuchat also notes that there have been cases of the virus spreading from person to person in the U.S. The two confirmed cases in Kansas are a husband and wife, one of whom traveled to Mexico. Two days after returning home, the spouse became ill, says Schuchat.
By Miranda Hitti, WebMD Health News. WebMD Senior Writer Daniel J. DeNoon contributed to this report.
Posted by Scott W. Yates, MD, MBA, MS, FACP
