Almost 40 million children are at risk of a growing measles threat as vaccination coverage has dropped since the beginning of the COVID-19 pandemic.
In 2021, a record high of nearly 40 million children missed a measles vaccine dose; 25 million children missed their first dose and an additional 14.7 million children missed their second dose, the World Health Organization (WHO) and the United States Centers for Disease Control and Prevention (CDC) reported.
This decline is a significant setback in global progress towards achieving and maintaining measles elimination and leaves millions of children susceptible to infection.
Imminent threat
In 2021, there were an estimated 9 million cases and 128,000 deaths from measles worldwide.
Some 22 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, mean that measles is an imminent threat in every region of the world.
“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.
Herd immunity
“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.
But 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 coverage varies by country.
Urgent global action needed
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, 10 countries that had previously eliminated measles experienced outbreaks and reestablished transmission.
In 2021, nearly 61 million measles vaccine doses were postponed or missed due to COVID-19-related delays in immunization campaigns in 18 countries.