Stories tagged public health

May
04
2009

Not to freak y'all out, but did you know that germs are on everything you touch? Using a special powder called Glo Germ (get it here) you can actually see how germs spread from one thing to another. It will make you want to wash your hands more often. (And the CDC recommends washing your hands frequently. In fact, why don't you go wash up right now?)

Scrub 'em: Use soap and water, and wash for 20 seconds. That's about the time it takes to sing the "Happy Birthday" song twice.
Scrub 'em: Use soap and water, and wash for 20 seconds. That's about the time it takes to sing the "Happy Birthday" song twice.Courtesy mitikusa

TRY THIS:
Goal: to observe how germs are spread
Age level:: 3 and above
Activity time: 2 - 5 minutes
Prep time: 5 minutes

Materials needed:

  • Glo Germ powder
  • Toys or common household/school/office objects to "spike" with germs
  • UV lamp or detector box

Preparation:

  1. Sprinkle Glo Germ powder on your objects.
  2. Arrange them somewhere where others can handle them.
  3. Plug in UV lamp, but don't turn it on.

Directions:
Encourage others to pick up and play with the objects. Ask them what they know about germs.

  • Do you know where microbes are found?
  • Do you know what a microbe/germ is?
  • Do you know what illnesses are caused by germs?
  • Do you know the best way to avoid getting sick because of germs?

After the discussion, tell them that, as part of an experiment, you've put "pretend" germs on one or some of the objects they may have touched today. Switch on the UV lamp: what glows?

Reinforce the fat that the Glo Germ powder is just to simulate germs. It won't make you sick. You can get rid of the germs by washing your hands. In fact, encourage your audience to wash their hands and then hold them under the UV light again.

(On the other hand, remember that not all germs are bad. Exposure to some germs is thought to protect people against asthma and allergies or colitis, and overuse of antibacterial products leads to antibiotic resistance and superbugs as well as potential damage to the environment.)

Vincent Racaniello, a professor of microbiology at Columbia University Medical Center, is blogging about the 2009 H1N1 swine flu. He's answering questions and addressing comments, but he's also posting daily about new developments and basic influenza virology. Fascinating...

May
01
2009

A research group led by Dirk Brockmann at Northwestern University has created a computer model that predicts the spread of the 2009 H1N1 influenza virus in the US. (It uses a complex set of mathematical equations to describe the movement of people and virus.)

How can you track and predict the movement of something so small?: Follow the money, of course! (This is a colorized negative stained transmission electron micrograph (TEM) showing some of the ultrastructural morphology of the A/CA/4/09 swine flu virus. Got that? Good.
How can you track and predict the movement of something so small?: Follow the money, of course! (This is a colorized negative stained transmission electron micrograph (TEM) showing some of the ultrastructural morphology of the A/CA/4/09 swine flu virus. Got that? Good.Courtesy CDC/C.S. Goldsmith and A. Balish

(Brockmann was a guest on Minnesota Public Radio's Midmorning show today, and you can listen to it online.)

The good news is that, based on what we know now, and assuming that no one takes any preventive measures, we could expect to see some 1,700 cases of swine flu in the next four weeks. Because of the preventive measures being taken wherever a suspected case of H1N1 flu has popped up, we should actually see fewer cases. (You can see Brockmann's models here.) That's lousy if you're one of the folks who picks up the virus, but not a devastating number of cases. Of course, this is a rapidly developing, fluid situation, and things may change. Still, tools like Brockmann's model help to ensure that emergency supplies and other resources get to the places likely to need them most before they're needed.

Professor's Computer Simulations Show Worst-Case Swine Flu Scenario from Northwestern News on Vimeo.

Don't have faith in computer models? Well, a second research group at Indiana University is using another model, with different equations, and getting very similar results. That's a pretty good indication that the predictions are reliable.

You might remember Brockmann from a 2006 study that used data from WheresGeorge.com, a site that allows users to enter the serial numbers from their dollar bills in order to see where they go, to predict the probability of a given bill remaining within a 10km radius over time. That gave him a very good picture of human mobility, reflecting daily commuting traffic, intermediate traffic, and long-distance air travel, all of which help to model how a disease could spread.

Apr
30
2009

Department of Health and Human Services
Department of Health and Human ServicesCourtesy Department of Health and Human Services

H1N1 Flu information

If you want valid information about Influenza A(H1N1), You should first check out the official disease control websites.

Here are some of the official web pages of our national and world leadership for information about fighting disease.

Also embeded is a webcast where public questions about the 2009 flu pandemic are answered by Acting Director of CDC, Dr. Besser.

Use the links below for official information about Influenza A(H1N1)

  1. Centers for Disease Control and Prevention
  2. PandemicFlu.gov
  3. CDC H1N1 flu information
  4. H1N1 Flu questions & answers
  5. World Health Organization info

President Obama's flu message

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Watch a webcast answering questions about the 2009 flu pandemic

Apr
30
2009

Is this the face of a pandemic threat?
Is this the face of a pandemic threat?Courtesy The Pug Father
No need to put down your pork chops, as health officials are quick to remind us: you can't get swine flu from eating products made from pigs. In fact, health officials have yet to find a pig with this particular strain of the virus. According to the CDC, the virus that's been making headlines this week contains not only pig, but also human and bird flu DNA. Viruses are complicated and mutate as they go from one host to the next, so it's difficult to tell just where novel strains originate. All of this has left many people to question whether it's appropriate to call the virus "swine flu" at all?

Pork producers say: leave pigs out of this!

They're afraid that the name "swine flu" will cause demand for their products to plummet, and have asked government officials and the news media to call the virus by it's scientific name, H1N1, which refers to the serotype of the virus - its particular chemical make-up. It's a rational fear on their part. Some countries have already banned meat and pork products from Mexico and parts of the US due to fear over the spread of the disease.

What do you think? Would a flu by any other name...smell like meat? When it comes to novel viruses like this one, what's in a name?

Apr
26
2009

Pandemic prevention in Mexico City
Pandemic prevention in Mexico CityCourtesy Chupacabras

No mass at Cathedral of Mexico City Sunday

In addition to churches, Mexico closed schools, museums, libraries and theaters, hoping to contain the outbreak of a swine flu variety that is killing people. Officials say as many as 81 people have died and more than 1,300 others are sickened from a new type of flu.

The virus contains genetic pieces from four different flu viruses; North American swine influenza, North American avian influenza, human influenza A N1H1, and swine influenza viruses found in Asia and Europe.

Swine flu symptoms

Symptoms of the flu-like illness include a fever of more than 100 degrees Fahrenheit (37.8 degrees Celsius), body aches, coughing, a sore throat, respiratory congestion and, in some cases, vomiting and diarrhea. Click this link for more key facts about swine influenza (swine flu).

Global swine flu alert

China, Russia and Taiwan plan to put anyone with symptoms of the deadly virus under quarantine. Ten students from New Zealand who took a school trip to Mexico "likely" caught this swine flu. Four possible cases of swine flu are currently under investigation in France. More than 100 students at the St. Francis Preparatory School, in Queens, New York recently began suffering a fever, sore throat and aches and pains. Some of them had recently been in Mexico.

"The United States government is working with the World Health Organization and other international partners to assure early detection and warning and to respond as rapidly as possible to this threat," Dr. Richard Besser, acting director of the CDC, said during a Friday afternoon press briefing.

How to track illnesses globally

There are several useful online resources that track health information and disease outbreaks.

  1. The World Health Organization (WHO) has an Epidemic and Pandemic Alert and Response (EPR) webpage.

    As of 26 April 2009, the United States Government has reported 20 laboratory confirmed human cases of swine influenza A/H1N1 (8 in New York, 7 in California, 2 in Texas, 2 in Kansas and 1 in Ohio).

  2. HealthMap is a website that aggregates news feeds from the WHO, Google News, ProMED, and elsewhere to map out all of the disease outbreaks. (Click the box in front of influenza under "Diseases, last 30 days" to see just flu cases.)

What is a pandemic?

The WHO's pandemic alert level is currently up to phase 3. The organization said the level could be raised to phase 4 if the virus shows sustained ability to pass from human to human. Phase 5 would be reached if the virus is found in at least two countries in the same region.

"The declaration of phase 5 is a strong signal that a pandemic is imminent and that the time to finalize the organization, communication, and implementation of the planned mitigation measures is short," WHO said. Associated Press

Phase 6 would indicate a full-scale global pandemic.

Sources:

A couple years ago, we posted an item about psychology/psychiatry professionals debating if people can get addicted to video games. It generated a lot of discussion here on the Buzz. Here's a new study – done through a written survey – that says 8.5 percent of American teens exhibit behavior patterns that would reflect an addiction to video games. What do you think? Read this report and share your opinions here....if you don't need to go back to playing that video game.

Most insecticides work by killing bugs before they get the chance to grow and reproduce, but a new research study suggests that when it comes to mosquitos and malaria, this strategy might be part of the problem. Killing young mosquitoes increases the selective pressure on the population to develop resistance to pesticides. This means that any given pesticide will stop working shortly after it is introduced, making it harder to fight the disease, which is caused by parasites and spread by mosquitoes. By killing the mosquitoes when they are older, but before they are old enough to spread Malaria, scientists believe they can prolong the effectiveness of pesticides and save lives. This article explains more about their ideas. Learn more about malaria and share your thoughts on Science Buzz.

Earlier this month, we posted about the huge increase in federal taxes on cigarettes and how they are spurring on more people to quit smoking. Smoking opponents point out that smokers incur increased costs for medical care, so such a tax hike is warranted. But non-smokers live, on average, ten years longer than non-smokers and incur added government costs for Medicare, Social Security and other programs. This study says that every pack of cigarettes purchased, and the resulting long-term consequences, saves the federal government 32 cents. What do you think?

OK, I think the history of infectious disease is fascinating, and I'm a sucker for many things gross, but I'm still a bit surprised that I loved this little quiz game about the bubonic plague as much as I did. You gotta play. Did you love the animation and sound effects as much as I did?