Waarom kampt China met mazelenuitbraken terwijl vaccinatie verplicht is?

Zucht daar gaan we weer…..

Ik zal maar weer eens de fouten in dit vreselijk slecht geschreven artikel erbij halen.

“Vaccineren tegen mazelen is in China verplicht. Waarom heeft het land tussen 2009 en 2012 dan te kampen gehad met meer dan 700 mazelenuitbraken? Het antwoord op deze vraag is dat het mazelenvaccin niet effectief is.”
Zullen we de cijfers er eens bijpakken? http://www.who.int/bulletin/volumes/92/5/BLT-13-130195-table-T1.html
Kun je het verschil ervoor zien? Dan kun je toch wel zien dat er een daling is ingezet.
Hoe kwam dat? http://www.who.int/bulletin/volumes/92/5/13-130195/en/
Je kunt het gewoon nalezen. Maar voor de mensen die dat niet doen quote ik het hier even.

“In 2006, China endorsed the 2006–2012 national action plan for measles elimination. Subsequently, the country followed a comprehensive strategy for measles elimination, which included immunization, measles surveillance and infection control. Estimated coverage with the first dose of a vaccine containing measles virus increased from 80.4% in 2000 to 91.1% in 2009, while coverage with the second dose of such a vaccine increased from less than 80% before 2005 to 84.3% in 2009.6 Between 2003 and 2009, 27 of the 31 mainland provinces of China conducted unsynchronized province-wide supplementary immunization activities against measles, with 185.7 million children targeted.6 In September 2010, China conducted synchronized nationwide supplementary immunization activities against measles. These nationwide activities, which ignored vaccination status, achieved a reported coverage of 97.52%.11”

Dus er werd al een plan opgesteld om de mazelen te elimineren wat goed lukt als we kijken naar de cijfers.

Maar wacht een toename? Werkt het vaccin niet? Als ninefornews even de moeite had genomen het te lezen kun je het gewoon nalezen:
De cijfers: http://www.who.int/bulletin/volumes/92/5/BLT-13-130195-table-T2.html
Staat hier ook zelfs welk virus het is: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0034401

Uitleg ook gewoon gegeven: The resurgence of measles in 2013 occurred primarily among young, unvaccinated children, including infants who were too young to have been vaccinated and children of pre-school age who had missed one or both of their scheduled vaccinations. Despite the use of strong policies and programmes for measles vaccination, the H1 measles genotype continues to circulate in almost all of China’s provinces. The H1 genotype is the only indigenous measles genotype in China. Since there is no non-human reservoir for measles, the circulation of this genotype represents person-to-person transmission that has persisted in China for at least 20 years.

Dus concluderend:
In China, huge numbers of individuals are currently migrating from rural areas to towns and cities, largely in search of employment. Children who have moved county since birth – including those of individuals who have relocated in this fashion – are less likely to be fully vaccinated than local children.28–31 Improvements in the identification and location of children who are new to an area may permit marked improvements in vaccine coverage.

In 2013, most of the resurgence seen in measles cases was the result of the susceptibility of unvaccinated or incompletely vaccinated children – as has been the experience in some other countries.32,33 In some of China’s provinces, however, 2013 saw an increasing incidence of measles among adults. Although most adults in China are immune to measles, few have records of their vaccination status. The resulting general inability to distinguish immune adults from the non-immune without testing each individual makes campaigns of adult vaccination against measles difficult or inefficient.

Vaccins zijn dus wel effectief. Als journalist moet je altijd de bronnen checken.