Ancient Pathogen Is 'Imminent Threat' in Every Part of The World, WHO Warns - ScienceAlert

They described how a record number of nearly 40 million children had missed at least one measles vaccine dose in 2021.

The two-dose schedule gives about 99 percent protection against measles infection.

In developing countries where vaccine uptake is low, as many as one in ten who get measles, die from it.

In developed countries, deaths are overwhelmingly in unvaccinated people at a rate of around one in 1,000 to 5,000 measles cases.

For measles, vaccine coverage of 95 percent is typically considered to be the HIT magic number.

In the UK, 2021-22 data shows that 89 percent of children had received one measles vaccine dose.

In unvaccinated populations, a severe case of measles resulted in an average loss of 40 percent of antibodies that would normally recognise germs.

After a mild case of measles, unvaccinated children lost 33 percent of those antibodies.