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Nearly 40M Children Susceptible to Growing Measles Threat- WHO

Measles vaccination coverage has steadily declined since the beginning of the COVID-19 pandemic, the World Health Organization (WHO) reports. In 2021, a record high of nearly 40 million children missed the measles vaccine dose. At least 25 million children missed their first dose and an additional 14.7 million children missed their second dose.

This is according to a joint publication by the WHO and the United States Centers for Disease Control and Prevention (CDC) released on Wednesday where they note that last year, an estimated nine million cases were recorded and 128 000 deaths from measles worldwide. Twenty-two countries experienced large and disruptive outbreaks. 

Declines in vaccine coverage weakened measles surveillance and continued interruptions and delays in immunization activities due to COVID-19 as well as persistent large outbreaks in 2022. 

“The paradox of the pandemic is that while vaccines against COVID-19 were developed in record time and deployed in the largest vaccination campaign in history, routine immunization programs were badly disrupted, and millions of kids missed out on life-saving vaccinations against deadly diseases like measles,” said WHO Director-General Dr. Tedros Adhanom Ghebreyesus. 

He added “Getting immunization programs back on track is absolutely critical. Behind every statistic in this report is a child at risk of a preventable disease.”   

The situation is grave 

Measles is one of the most contagious human viruses but is almost entirely preventable through vaccination. Coverage of 95% or greater of 2 doses of measles-containing vaccine is needed to create herd immunity in order to protect communities and achieve and maintain measles elimination. 

The world is well under that, with only 81% of children receiving their first measles-containing vaccine dose, and only 71% of children receiving their second measles-containing vaccine dose. These are the lowest global coverage rates of the first dose of measles vaccination since 2008, although the coverage varies by country. 

 The organizations are urging global action noting that measles anywhere is a threat everywhere, as the virus can quickly spread to multiple communities and across international borders. No WHO region has achieved and sustained measles elimination.

Since 2016, ten countries that had previously eliminated measles experienced outbreaks and reestablished transmission. “The record number of children under-immunized and susceptible to measles shows the profound damage immunization systems have sustained during the COVID-19 pandemic,” said CDC Director Dr. Rochelle P. Walensky. 

“Measles outbreaks illustrate weaknesses in immunization programs, but public health officials can use outbreak response to identify communities at risk, understand causes of under-vaccination, and help deliver locally tailored solutions to ensure vaccinations are available to all.”    

In 2021, nearly 61 million measles vaccine doses were postponed or missed due to COVID-19-related delays in immunization campaigns in 18 countries. Delays increase the risk of measles outbreaks, so the time for public health officials to accelerate vaccination efforts and strengthen surveillance is now.

CDC and WHO urge coordinated and collaborative action from all partners at global, regional, national, and local levels to prioritize efforts to find and immunize all unprotected children, including those who were missed during the last two years.  

Measles outbreaks illustrate weaknesses in immunization programs and other essential health services. To mitigate the risk of outbreaks, countries and global stakeholders must invest in robust surveillance systems, according to a joint statement shared by WHO.

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