Thursday, October 21, 2010

Pregnancy: Should I Use a Seat Belt?

Should I wear a seat belt while I'm pregnant?

Yes, you should always wear a seat belt. Wearing your seat belt protects you and your baby from injury or death in the event of a car crash. You should wear a seat belt no matter where you sit in the car.

How should I wear my seat belt?

The seat belt should be a 3-point restraint. That means it should have a lap strap and a shoulder strap. Lap and shoulder belts keep you from being thrown from the car during an accident. The shoulder strap also keeps the pressure of your body off of the baby after a crash.

Wednesday, October 20, 2010

Avian Influenza A Virus Infections of Humans

Although avian influenza A viruses usually do not infect humans, rare cases of human infection with avian influenza A viruses have been reported. Most human infections with avian influenza A viruses have occurred following direct contact with infected poultry. Human clinical illness from infection with avian influenza A viruses has ranged from eye infections (conjunctivitis) to severe respiratory disease (pneumonia) to death.

Since November 2003, nearly 400 cases of human infection with highly pathogenic avian influenza A (H5N1) viruses have been reported by more than a dozen countries in Asia, Africa, the Pacific, Europe and the Near East. Highly pathogenic avian influenza A (H5N1) viruses have never been detected among wild birds, domestic poultry, or people in the United States. The World Health Organization (WHO) maintains situation updates and cumulative reports of human cases of avian influenza A (H5N1). Most human cases of H5N1 virus infection are thought to have occurred as a result of direct contact with sick or dead infected poultry.

Avian influenza frequently asked questions

What is avian influenza?

Avian influenza, or “bird flu”, is a contagious disease of animals caused by viruses that normally infect only birds and, less commonly, pigs. Avian influenza viruses are highly species-specific, but have, on rare occasions, crossed the species barrier to infect humans.

In domestic poultry, infection with avian influenza viruses causes two main forms of disease, distinguished by low and high extremes of virulence. The so-called “low pathogenic” form commonly causes only mild symptoms (ruffled feathers, a drop in egg production) and may easily go undetected. The highly pathogenic form is far more dramatic. It spreads very rapidly through poultry flocks, causes disease affecting multiple internal organs, and has a mortality that can approach 100%, often within 48 hours.

Which viruses cause highly pathogenic disease?

Influenza A viruses1 have 16 H subtypes and 9 N subtypes2. Only viruses of the H5 and H7 subtypes are known to cause the highly pathogenic form of the disease. However, not all viruses of the H5 and H7 subtypes are highly pathogenic and not all will cause severe disease in poultry.

Key Facts About Avian Influenza (Bird Flu) and Avian Influenza A (H5N1) Virus

Avian Influenza (Bird Flu)

Avian influenza in birds

Avian influenza is an infection caused by avian (bird) influenza (flu) viruses. These influenza viruses occur naturally among birds. Wild birds worldwide carry the viruses in their intestines, but usually do not get sick from them. However, avian influenza is very contagious among birds and can make some domesticated birds, including chickens, ducks, and turkeys, very sick and kill them.

Infected birds shed influenza virus in their saliva, nasal secretions, and feces. Susceptible birds become infected when they have contact with contaminated secretions or excretions or with surfaces that are contaminated with secretions or excretions from infected birds. Domesticated birds may become infected with avian influenza virus through direct contact with infected waterfowl or other infected poultry, or through contact with surfaces (such as dirt or cages) or materials (such as water or feed) that have been contaminated with the virus.

HIV/AIDS: Frequently Asked Questions

HIV/AIDS 101

Do all people with HIV have AIDS?

No. Being diagnosed with HIV does NOT mean a person will also be diagnosed with AIDS. Healthcare professionals diagnose AIDS only when people with HIV disease begin to get severe opportunistic infections, or their T-cell counts fall below a certain level.

Was HIV created by the United States Government?

No, AIDS was not created by the United States Government.

Can I get AIDS from sharing a cup or shaking hands with someone who has HIV or AIDS?

HIV is found only in body fluids, so you cannot get HIV by shaking someone’s hand or giving them a hug (or by using the same toilet or towel). While HIV is found in saliva, sharing cups or utensils has never been shown to transmit HIV.

CDC’s Clinical Studies of Pre-Exposure Prophylaxis for HIV Prevention

Research Rationale

Why is CDC conducting trials of pre-exposure prophylaxis for HIV prevention?

CDC is sponsoring these trials because safe and effective new approaches to HIV prevention are urgently needed. More than 7,000 people continue to become infected around the world every day (approximately 2.7 million per year, including 56,000 in the U.S.). Although behavior change programs have contributed to dramatic reductions in the number of annual infections in the United States and many other nations, far too many people remain at high risk.

With an effective vaccine years away, there is mounting evidence that antiretroviral agents may be able to play an important role in reducing the risk for transmission. Researchers believe that an HIV drug approved by the U.S. Food and Drug Administration (FDA)―tenofovir disoproxil fumarate (tenofovir, brand name Viread) used alone or in combination with emtricitabine (together, known by the brand name Truvada)―taken daily as an oral preventive drug, is among the most important new prevention approaches being investigated today. The approach is called pre-exposure prophylaxis, or PrEP.

Questions and Answers: HIV Prevention

How Effective Are Latex Condoms in Preventing HIV?

Latex condoms, when used consistently and correctly, are highly effective in preventing heterosexual sexual transmission of HIV, the virus that causes AIDS. Research on the effectiveness of latex condoms in preventing heterosexual transmission is both comprehensive and conclusive. The ability of latex condoms to prevent transmission has been scientifically established in laboratory studies as well as in epidemiologic studies of uninfected persons at very high risk of infection because they were involved in sexual relationships with HIV-infected partners. The most recent meta-analysis of epidemiologic studies of condom effectiveness was published by Weller and Davis in 2004. This analysis refines and updates their previous report published in 1999. The analysis demonstrates that the consistent use of latex condoms provides a high degree of protection against heterosexual transmission of HIV.

Tuesday, October 19, 2010

Basic Information about HIV and AIDS

Electron microscope image of HIV, seen as small spheres on the surface of white blood cells.
While there have been great strides in the prevention of HIV transmission and care of HIV infection and AIDS since AIDS was first recognized in 1981, many people still have questions about HIV and AIDS. The information below is designed to answer some of these questions based on the best available science.

What are HIV and AIDS?

HIV is the human immunodeficiency virus. It is the virus that can lead to acquired immune deficiency syndrome, or AIDS. CDC estimates that about 56,000 people in the United States contracted HIV in 2006.

There are two types of HIV, HIV-1 and HIV-2. In the United States, unless otherwise noted, the term “HIV” primarily refers to HIV-1.

Both types of HIV damage a person’s body by destroying specific blood cells, called CD4+ T cells, which are crucial to helping the body fight diseases.

HIV Testing: Questions for the doctor

HIV is the virus that causes AIDS. If you have HIV, early treatment can help you live a longer, healthier life.

The only way to know if you have HIV is to get tested.

What do I ask the doctor?

Visiting the doctor can be stressful. It helps to have questions written down before your appointment. Take this list of questions with you the next time you visit the doctor or health clinic.
  • Should I get tested for HIV?
  • What puts me at risk for HIV?
  • How will you test me for HIV?

Monday, October 18, 2010

Cancer: Questions and Answers

About 1.4 million new cases of cancer will be diagnosed in the United States in 2005, and more than 550,000 people will die of the disease . Cancer is the second leading cause of death in this country. However, improvements in cancer detection, diagnosis, and treatment have increased the survival rate for many types of cancer. About 64 percent of all people diagnosed with cancer will be alive 5 years after diagnosis.
  • What is cancer?
Cancer is a group of many related diseases that begin in cells, the body's basic building blocks. To understand cancer, it is helpful to know what happens when normal cells become cancerous.

The body is made up of many types of cells. Normally, cells grow and divide to produce more cells as they are needed to keep the body healthy. Sometimes, this orderly process goes wrong. New cells form when the body does not need them, and old cells do not die when they should. The extra cells form a mass of tissue called a growth or tumor. Not all tumors are cancerous; tumors can be benign or malignant.

Benign tumors are not cancer. They can often be removed and, in most cases, they do not come back. Cells in benign tumors do not spread to other parts of the body. Most important, benign tumors are rarely a threat to life.

Bike Safety

It's a beautiful day — the sun is shining, the birds are chirping. What could be more perfect than a bike ride? But wait! Before you pull your bike out of the garage, let's find out how to stay safe on two wheels.

Why Is Bicycle Safety So Important?

Bike riding is a lot of fun, but accidents happen. The safest way to use your bike is for transportation, not play. Every year, about 300,000 kids go to the emergency department because of bike injuries, and at least 10,000 kids have injuries that require a few days in the hospital. Some of these injuries are so serious that children die, usually from head injuries.

A head injury can mean brain injury. That's why it's so important to wear your bike helmet. Wearing one doesn't mean you can be reckless, but a helmet will provide some protection for your face, head, and brain in case you fall down.

A Helmet How-To

Bike helmets are so important that the U.S. government has created safety standards for them. Your helmet should have a sticker that says it meets standards set by the Consumer Product Safety Commission (CPSC). If your helmet doesn't have a CPSC sticker, ask your mom or dad to get you one that does. Wear a bike helmet EVERY TIME YOU RIDE, even if you are going for a short ride.

Core exercises: 7 reasons to strengthen your core muscles

Core exercises are an important part of a well-rounded fitness program. Aside from occasional sit-ups and push-ups, however, core exercises are often neglected. Still, it pays to get your core muscles — the muscles around your trunk and pelvis — in better shape. Check out seven specific reasons to include core exercises in your fitness routine.
  • Core exercises improve your balance and stability
Core exercises train the muscles in your pelvis, lower back, hips and abdomen to work in harmony. This leads to better balance and stability, whether on the playing field or in daily activities. In fact, most sports and other physical activities depend on stable core muscles.
  • Core exercises don't require specialized equipment or a gym membership
Any exercise that uses the trunk of your body without support counts as a core exercise. Abdominal crunches are a classic core exercise. Try lying on your back and placing your feet on a wall so that your knees and hips are bent at 90-degree angles. Tighten your abdominal muscles, then raise your head and shoulders off the floor. Classic push-ups count, too. You can also do push-ups on your knees or standing up against a wall.

Pilates

Pilates (pronounced: puh-lah-teez) improves your mental and physical well-being, increases flexibility, and strengthens muscles. Pilates uses controlled movements in the form of mat exercises or equipment to tone and strengthen the body. For decades, it's been the exercise of choice for dancers and gymnasts (and now Hollywood actors), but it was originally used to rehabilitate bedridden or immobile patients during World War I.

What Is Pilates?

Pilates is a body conditioning routine that seeks to build flexibility, strength, endurance, and coordination without adding muscle bulk. In addition, pilates increases circulation and helps to sculpt the body and strengthen the body's "core" or "powerhouse" (torso). People who do pilates regularly feel they have better posture, are less prone to injury, and experience better overall health.

Joseph H. Pilates, the founder of the pilates exercise method, was born in Germany. As a child he was frail, living with asthma in addition to other childhood conditions. To build his body and grow stronger, he took up several different sports, eventually becoming an accomplished athlete. As a nurse in Great Britain during World War I, he designed exercise methods and equipment for immobilized patients and soldiers.

Strengthen Your Abdominals With Stability Balls

One of today’s most versatile pieces of exercise equipment looks more like an overgrown beach ball than a useful fitness tool.

The stability ball—an extra-large, inflatable orb designed to improve balance while targeting specific muscle groups—has grown in popularity since its mainstream introduction in the late 1980s and early 1990s.

The stability ball can be adapted for many uses, including developing core strength, improving posture and facilitating stretching, among others. Its application is particularly widespread in the physical therapy industry, where it was first put to use in the 1960s.

Thanks to fitness professionals’ interest in the stability ball and its numerous benefits, there have been several exercise programs developed for just about every need, desire and body part.

The Stability Ball and Your Core

So much of the exercise that people do, such as running and cycling, focuses on the lower body. Not much attention is paid to the trunk, or core, of the body. It is the muscles of the core—the abdomen, chest and back—that stabilize the rest of the body.

Think of your core as a strong column that links the upper body and lower body together. Having a solid core creates a foundation for all activities, and is especially important when you add a heavy load, such as weights, to your workout.

Diverticulitis diet

Definition

A diverticulitis diet can't treat or prevent diverticulitis. Instead, a diverticulitis diet may help you feel better while your doctor treats your diverticulitis with other therapies, such as antibiotics.

Diverticulitis occurs when small, bulging pouches (diverticula) in your digestive tract become infected and inflamed. A diverticulitis diet, which includes clear liquids and low-fiber foods, gives your digestive tract time to rest during your diverticulitis treatment.

If you experience a mild case of diverticulitis, your doctor may recommend that you eat a diverticulitis diet at home during your treatment. For people with more-severe signs and symptoms, hospitalization may be necessary.

Purpose

A diverticulitis diet gives your digestive system a chance to rest while your doctor treats your diverticulitis. A diverticulitis diet is not a treatment for diverticulitis. Your doctor may recommend that you eat a diverticulitis diet at home during your treatment if your diverticulitis signs and symptoms are mild.