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Measles cases rose 20% last year, driven by a lack of vaccine coverage in the world’s poorest countries and those riddled with conflict, the World Health Organization and the U.S. Centers for Disease Control and Prevention (CDC) said on Thursday.
Nearly half of all the large and disruptive outbreaks occurred in the African region where the number of deaths increased by 37%, they said.
“At this moment, every single country in the world has access to measles vaccine, so there’s no reason why any child should be infected with the disease and no child should die from measles,” WHO’s Natasha Crowcroft, a senior technical adviser on Measles and Rubella, told reporters.
Measles is caused by an airborne virus that mostly affects children under the age of five, but it is preventable with two doses of the measles shot. However, immunization coverage was “inadequate” globally, the WHO and the CDC said.
About 10.3 million cases of the highly contagious infection were reported in 2023, compared with 8.65 million reported in the previous year, a report by the two agencies showed.
The number of deaths associated with the disease fell 8% to 107,500 due to improved access to health services and vaccines in high-income countries, such as Europe where cases surged last year.
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Regardless of the decline, the death toll was “unacceptable,” the agencies said.
The “biggest and the most overwhelming” cause of the spike in cases is the systems’ failure to reach children with vaccines, said WHO’s Crowcroft. However, vaccine hesitancy has also played a role.
Vaccine hesitancy has been on the rise since the COVID-19 pandemic as people lost confidence in the importance of routine childhood vaccines against diseases such as measles and polio.
More than 22 million children missed their first dose of measles vaccine in 2023, the agencies said.
That year, disruptive measles outbreaks were reported in 57 countries due to gaps in vaccination coverage, representing a nearly 60% jump from 36 countries in the previous year, the report said.
Apart from the African region, a substantial upsurge in cases was reported in the Eastern Mediterranean, European, Southeast Asian and Western Pacific regions, the report said.
(Reporting by Sriparna Roy and Mariam Sunny in Bengaluru; Editing by Shinjini Ganguli)
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