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Las vacunas son la mejor protección

Vaccination is the best protection against 16 major diseases and among the greatest gifts a parent can give a child. Getting your child immunized should start when she’s very young, and continue through adolescence. 

Measles is making a comeback. Whooping cough keeps hanging around. Increasingly, diseases once thought nearly eradicated are returning. Why? Because not all parents are getting their children vaccinated. Vaccines are much more than a good idea. They’ve made the difference in saving children’s lives throughout the last century, and still do today. Indeed, some of the most devastating diseases that affect children have been greatly reduced or eradicated completely thanks to vaccination. “Vaccines are one of the single most important things you can do to protect your child from deadly and debilitating diseases,” says Ari Brown, M.D., FAAP, a practicing pediatrician in Austin, Texas, and member of the American Academy of Pediatrics (AAP) Council on Communications and Media. “Many of the diseases we protect against with vaccines are not treatable once you get the disease.”Consider this pre- and post-vaccination information:

  • Smallpox: This terrible disease once killed nearly 1,000 children per year. It was completely eradicated in 1977 thanks to the smallpox vaccine.
  • Diphtheria: In 1920, nearly 150,000 cases were reported in the United States, with more than 13,000 deaths. By 2002, only one case was reported nationwide.
  • Pertussis (whooping cough): More than 107,000 cases were reported in 1922, with nearly 5,100 deaths. In 2002, only 9,771 cases were reported nationwide.
  • Polio: In the years 1951-54, more than 16,000 cases of paralytic polio were reported, leading to nearly 1,900 deaths. The wild-type virus caused type of paralytic polio was eliminated from the Western Hemisphere in 1991, thanks to the vaccine.
  • Measles: An average of 450 Americans died from measles each year between 1953 and1963. But because of the vaccine, measles cases have been reduced by more than 99 percent compared with the pre-vaccine era.

These are just a few examples of the profound impact vaccines have made in saving children’s lives and preventing serious consequences of conditions like bacterial meningitis. In recent years, newer vaccines have made dramatic inroads in fighting even more diseases.

“Immunization has been the most successful public health program of the 20th century,” says Renée Jenkins, M.D., FAAP, president of the AAP. “The diseases that we used to see that killed and permanently disabled children, we just don’t see those any more.”

Indeed, vaccination may be a victim of its own success. “I think our problem is that many parents never saw those diseases or heard of someone who had polio or diphtheria,” Dr. Jenkins says. “So they don’t have a sense of what life is like without immunity. And now we’re seeing these diseases making a comeback.”

Jenkins points out that there were more than 20,000 cases of pertussis (whooping cough) in 2005, and eight infants died from it.

“There have been multiple outbreaks of measles in three states, too,” she adds, “all coming from other countries and exposing vulnerable children.”

Not every nation has access to an up-to-date vaccination program. At a time when the world is “smaller” than ever, thanks to the ease of international travel and global trade, the importance of protecting your children with a full schedule of vaccines cannot be understated. Sick people, carriers of many of the diseases we vaccinate against, can bring exposure to these diseases from other parts of the world, or unvaccinated U.S. travelers returning from other countries can unwittingly bring(import) diseases to the U.S., exposing schoolmates, family, and friends.

“Basically, you’re just a plane ride away from potentially fatal diseases,” says David Tayloe, M.D., FAAP, president-elect of the AAP.

Vaccine Safety

Are vaccines safe? That’s a very important concern all parents have about anything that goes into their children’s bodies, and vaccines are no exception.

The good news is that the U.S. immunization program is among the safest in the world. Vaccines are tested for years before they are approved for use in the general population. These tests include all eligible age groups and combinations of all appropriate vaccines, to be sure that each is safe when given with the others. In rare, unpredictable circumstances, a vaccine can cause health problems for a child. When this happens, the U.S. has a Vaccine Injury Compensation Program.

This tiny risk must be weighed, however, against the far greater risk of contracting a serious disease that could threaten a child’s life. In 2007, vaccines are estimated to have prevented 14 million infections and saved 33,000 lives.

“Your pediatrician has devoted his or her life to protecting children and keeping them healthy,” Dr. Brown explains. “If they had any concerns about shots, they would be the first to stop or change what they recommend. Remember, most of us pediatricians are parents!”

Remember to vaccinate adolescents!

While it’s easy to think of vaccines as an early childhood necessity, the truth is that immunization is just as important for older children and adolescents. The AAP recommends the following vaccinations for children between the ages of 11 and 19 if they haven’t received the full dosages:

  • Meningococcal disease: Recommended for all teens age 11 through 18 for protection against this devastating illness. It’s also recommended for all college freshmen living in dorms regardless of age.
  • Human Papillomavirus (HPV): This series of three vaccines provides immunity against several types of the virus that cause cervical cancer.
  • Pertussis (whooping cough) (Tdap, td): Children 11 or 12 years of age need a Tdap booster at this time, and will need another booster every 10 years.
  • Hepatitis B (Hep B)
  • Measles, Mumps, Rubella (MMR)
  • Polio
  • Varicella: If the child hasn’t had chickenpox and hasn’t been vaccinated, the two-dose vaccination is necessary. A teen who only received one dose of the vaccine as a child should get the second dose now, as well.
  • Influenza
  • Pneumococcal disease: Some adolescents with chronic health problems should receive this vaccine. Your pediatrician can guide you as to whether this is recommended for your child.
  • Hepatitis A: While anyone can get hepatitis A, certain teens are at greater risk. Talk to your pediatrician about your child’s risks and the benefits of this two-dose vaccine.

Among the newer shots is the meningococcal vaccine, which protects young people against an aggressive, potentially lethal condition. This rapidly developing disease kills 10 percent of those it strikes and leaves about 15 percent of survivors with brain damage, hearing loss, or amputated limbs. Approximately 15 to 20 percent of the population are carriers of the bacterium and never show symptoms. The CDC reports that only 12 percent of those eligible had received the vaccine by 2006, leaving far too many at risk. The vaccine prevents four of the five strains of meningococcal meningitis, which cause about 70 percent of cases in the U.S. Most insurers cover the vaccination.

Another critically important vaccine that was recently licensed is the HPV vaccine, which prevents two of the most common types of virus linked to cervical cancer, as well as two of the most common types of genital warts. Cervical cancer is the second-most prolific type of cancer among American women.

“I think this is a very important vaccine for older girls,” says David Tayloe, M.D, FAAP. “Many women have contracted some form of HPV by the time they reach their 50s, and they are at increased risk of developing cervical cancer as a result. This vaccine means a 90 percent reduction in the likelihood of a girl developing cervical cancer.” Renée Jenkins, M.D, FAAP, says the key to helping parents remember these important vaccines is the “protection visit” with a pediatrician, which the CDC and AAP recommend for all preadolescents at 11 or 12 years old. This visit with a pediatrician is a chance for the child and doctor to discuss the many things that can put a teen’s health at risk.

“We have to talk about injuries, smoking, sexuality, and drugs and alcohol, among other things,” Dr. Jenkins says. “We talk about managing those risks from a health perspective, to help the child prepare for what he or she will face growing up and maturing.” And that’s a great time to get adolescent vaccines taken care of, too.

Stay on Schedule

Vaccines are given according to a schedule that has been created based on extensive study and analysis. Some vaccines protect against a single disease, while others — called combo vaccines — offer protection against several diseases with a single injection.

The vaccination schedule is designed to give immunized children the maximum protection as soon as safely possible. It may be tempting, but creating your own vaccine timetable, rather than following the recommended schedule, is not a good idea.

“Basically, if you make up your own schedule, you’re choosing to give shots at time intervals and combinations that have not been studied,” Dr. Brown says. “We don’t know how that will impact your child’s immune response. What we do know is that it is like playing Russian roulette. It may leave your child unprotected from potentially deadly diseases.”

Vaccination for Life

Many of us think of vaccination as something that applies only to early childhood. But getting immunized against contagious disease is a lifelong need. In fact, vaccination should continue throughout the life of a child, including in the adolescent years. Even for adults, the annual flu shot is a scheduled part of keeping healthy — all the more so, the older we get. Just as important as the initial vaccinations are the booster shots, which are designed to build on the previous vaccines’ effectiveness to continue immunity.

Protection for Everyone

Unfortunately, some parents forget or skip the vaccines, which undercuts the effectiveness of a very important concept in vaccination: herd immunity. Herd immunity is the benefit everyone receives from a vaccinated population once immunization reaches a critical level. When enough people are vaccinated, everyone — including those who are too young or too sick to be immunized — receives some protection from the spread of diseases.

The Recent Measles Outbreak

One of the most infectious diseases in the world, measles frequently finds its way into the U.S. via international visitors from nations where the vaccine doesn’t exist or isn’t widely used. The World Health Organization reported that nearly 1 million measles-related deaths occurred in developing countries in 1999.

In the U.S., the measles vaccine has been so widely embraced that we have seen a reduction of more than 99 percent in measles cases, compared to the pre-vaccine era. In fact, the CDC announced in 2000 that measles had been eliminated, thanks to the measles vaccine.

But a recent outbreak of measles points to a dangerous trend among some parents who are not immunizing their children against measles or other diseases. This poses a real risk to the health of all unvaccinated children. In August, the CDC announced that 15 children under 20 had been hospitalized with the disease, and 131 had been diagnosed since the beginning of 2008. Many of the children who were diagnosed had not been vaccinated by choice, or were too young. It is believed that the sick children contracted measles from children who had traveled overseas.

To Dr. Tayloe, one important point must be made. “Parents should not get their immunization information from TV stars or other non-scientific advocates,” he says. “The right person to ask is your pediatrician. Don’t be afraid to ask any question you have about vaccination. Your pediatrician is there to help you understand why vaccination is so important, and above all to do everything he or she can to safeguard your child’s health.”

This article was featured in Healthy Children Magazine. To view the full issue, click here.

Última actualización
Healthy Children Magazine, Fall 2008
La información contenida en este sitio web no debe usarse como sustituto al consejo y cuidado médico de su pediatra. Puede haber muchas variaciones en el tratamiento que su pediatra podría recomendar basado en hechos y circunstancias individuales.
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