최종편집 : 2019.08.19 22:52 |
Community Immunity ‘How Vaccines Protect Us All’
2019/08/06 15:55 입력
트위터로 기사전송 페이스북으로 기사전송 구글+로 기사전송 C로그로 기사전송
다문화가족 보건정보, 예방접종이 어떻게 우리 지역사회를 지킬까요?
사진.jpg
 
Parents know that kids are vulnerable to a host of infectious diseases. Research supported by NIH and others proves that the benefits of vaccines in preventing illness and death greatly outweigh the risks.

The list of childhood diseases can be overwhelming: measles, mumps, rubella, diphtheria, pertussis, polio, meningitis, influenza and rotavirus. In the era before vaccines, many children in the U.S. died or became disabled from these diseases. Many still do in countries and regions with lower vaccination rates.

With all the international travel in the world these days, it’s important to keep vaccines, or immunizations, up to date. Here’s just one example of what might happen if you don’t. By 2000, immunization had practically wiped out measles in the U.S. But a measles outbreak in 2005 was traced to one unvaccinated U.S. resident infected during a visit to Europe. The returning traveler infected American children who hadn’t been vaccinated because of safety concerns?despite study after study showing that childhood vaccines are safe and effective.

A major epidemic didn’t emerge that time. That’s because enough people in the surrounding communities had already been vaccinated against measles.

“The important concept,” says Dr. Marc Lipsitch of the Harvard School of Public Health, “is that vaccinating people protects not only them, but others in the community. If I’m protected, I can protect others.”

This type of protection is known as “community immunity” or “herd immunity.”  When enough of the community is immunized against a contagious disease, most other members are protected from infection because there’s little opportunity for the disease to spread.
Newborns, pregnant women or people whose immune systems are weakened may not be eligible for certain vaccines. Yet even they will get some protection because the spread of contagious disease is contained.

“Epidemiologists think of infections as chain reactions, whose speed depends on contagiousness,” says Lipsitch. “The more contagious the disease, the more vaccination is required. The data tells us that herd immunity works.”

Using mathematical formulas and computer programs, NIH-funded scientists like Lipsitch have developed models to determine what proportion of the population has to be vaccinated to eliminate the spread of disease. As one example, a worldwide vaccination campaign completely eliminated, or eradicated, smallpox in the 1970s. So many people were immunized that the virus couldn’t sustain itself.

More recently, infant vaccination against Haemophilus influenzae type b (Hib, which can cause meningitis) lowered the risk of disease in the whole population. Before the vaccine, Hib struck about 1 in 200 children younger than age 5. It killed many and often left survivors with permanent brain damage. After the Hib vaccine was introduced in the mid-1980s, the incidence of Hib dropped by 99%.

“Infectious disease eradication is possible,” says Lipsitch. Even when a disease?such as measles or Hib? hasn’t been completely wiped out, immunizations can reduce disease transmission, so that epidemics become less frequent.

When parents choose to immunize, they’re helping more than their own. Make sure your child’s immunizations are up to date. And talk with your child’s doctor if you have any concerns about vaccine safety.
NIH, USA

[ 경기다문화뉴스 danews1@daum.net ]
경기다문화뉴스 기자의 다른 기사 보기
기사제보 및 보도자료 danews1@daum.net
다문화사회를 선도하는 경기다문화뉴스(danews.kr) - copyright ⓒ 경기다문화뉴스. 무단전재 & 재배포 금지
댓글달기

화제의 포토

화제의 포토더보기

  • 회사소개
  • 광고안내
  • 제휴·광고문의
  • 기사제보
  • 정기구독신청
  • 다이렉트결제
  • 고객센터
  • 저작권정책
  • 회원약관
  • 개인정보취급방침
  • 청소년보호정책
  • 이메일주소무단수집거부
  • RSS

  • 경기다문화뉴스 (http://www.danews.kr) | 설립일 : 2013년 3월 4일 | 발행인 겸 편집인 : 송하성 | 주소 : 경기도 수원시 장안구 정조로 921번길 5, 3층(영화동)
    등록번호 : 경기 다50340  | 사업자등록번호 : 134-32-27206 | 대표전화 : 031-328-0211 [오전 9시~오후 6시 / 토,일,공휴일 제외] | danews1@daum.net
                                                                      Copyright ⓒ 2013 경기다문화뉴스 All right reserved. 
    경기다문화뉴스의 모든 콘텐츠(기사)는 저작권법의 보호를 받습니다. 무단 전재·복사·배포 등을 금합니다.