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WHO moved the token after a strong return of illness in 2018



World Health ORganisation just repealed the United Kingdom as a "measles-free" country Just two years after success. It is too early to know the reasons why measles has increased by three in just one year, but the case of England reminds me that measles continues to grow worldwide.


You can't lower your vigilance

Measles cases up to 2018 Data: Public Health Archives of the UK and the Health Protection Agency

What does "without measles" mean? In general, WHO has a special way of expressing yourself. In this case, "measles elimination" does not mean, as it might seem, that there is no measles in this country. In fact, in the United Kingdom, 284 people fell ill in 2017 (although it was still measles-free).

In this state of "no endemic transmission" WHO confirms three things: no circulating measles, high vaccination levels and good identification systems. What is happening is that after adopting these three assumptions, measles can only be individual cases and will have, yes or no, very limited extension.

Fleeting success In this way, the United Kingdom achieved measles elimination status in 2017. But the situation changed in 2018, when the confirmed cases were 991. In addition, which is important, the same virus strain (B3 Dublin) has been detected for more than 12 months since the end of 2017 to the beginning of 2018

"Loss of elimination status [del sarampión] is a clear reminder how important this is for people who can be vaccinated. This gives you the opportunity to raise awareness about the potential risk of measles, the importance of vaccinations, and report suspicious cases to limit further spread, "they explain from public health in England.

And this is not an exaggeration because, in effect, group immunity is a decisive factor in disease control. For the United Kingdom, in which measles has been vaccinated since 1968, 'While the first dose coverage in the United Kingdom has achieved a target WHO of 95% for five-year-olds, the second dose coverage is 87.4%. "

As you can see in the illustration above, this additional 7% has a significant impact on the possible spread of the disease and helps the virus circulate through society, jumping from community to community, much easier. With this data in the table WHO was forced withdraw the status of a measles-free country.

Situation in Spain. On the other hand, Spain has been able to verify the elimination and rubella elimination status, which was achieved for the first time in 2016 and 2015, respectively. This is because although 233 cases of measles (and no rubella) have been confirmed, they are imported or produced by them .

Picture | Hi I M Nik


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