• Measles cases jumped 79% in January and February 2022, as COVID-19 diverted resources from measles vaccinations.
  • Somalia, Yemen, Nigeria, Afghanistan and Ethiopia have had the biggest measles outbreaks in the past year.
  • 57 vaccination campaigns for preventable diseases remain postponed in 43 countries – UNICEF and the World Health Organization warn they need to be restarted urgently.

Measles cases, usually kept under control with vaccines, are soaring.

In the first two months of 2022, measles cases jumped almost 80% compared to the same time last year, data from UNICEF and the World Health Organization (WHO) shows.

So what is going on and just how serious is this disease?

What is measles?

Measles is a highly contagious disease. In 2018, measles killed more than 140,000 people, according to the WHO. Most of these were children younger than five years old. In developing countries, particularly in parts of Africa and Asia, measles is still common.

Measles is caused by a virus that infects the respiratory tract. This then spreads through the body. Symptoms include a high fever and rash. Measles can lead to serious complications including blindness, encephalitis – an infection that causes brain swelling – and severe respiratory infections like pneumonia. It’s these complications that lead to most deaths. Young children who are unvaccinated and poorly nourished are most at risk from measles.

Measles is spread through the air – by coughing and sneezing – and by direct contact with infected secretions from the nose or throat.

How has measles vaccination helped?

A measles vaccine was introduced in 1963 and led to widespread vaccination. Before this, measles killed about 2.6 million people a year, the WHO says, and there were measles epidemics roughly every two to three years.

Death rates were higher in poorer countries, but measles also infected around 500,000 Americans a year in the mid-1950s, killing around 10% of them. By 2000, the United Sates was declared measles-free.

Between 2000 and 2018, more than 23 million deaths globally have been prevented by measles vaccination, according to the WHO. This makes the measles vaccine “one of the best buys in public health,” it adds.

Reported cases of measles, 1980-2020
Reported cases have fallen steadily in recent decades.
Image: Our World in Data
Vaccines, Health and healthcare, Gavi

What is the World Economic Forum doing about access to vaccines?

In 2000, Gavi, the Vaccine Alliance was launched at the World Economic Forum's Annual Meeting in Davos, with an initial pledge of $750 million from the Bill and Melinda Gates Foundation.

The aim of Gavi is to make vaccines more accessible and affordable for all - wherever people live in the world.

Along with saving an estimated 10 million lives worldwide in less than 20 years,through the vaccination of nearly 700 million children, - Gavi has most recently ensured a life-saving vaccine for Ebola.

At Davos 2016, we announced Gavi's partnership with Merck to make the life-saving Ebola vaccine a reality.

The Ebola vaccine is the result of years of energy and commitment from Merck; the generosity of Canada’s federal government; leadership by WHO; strong support to test the vaccine from both NGOs such as MSF and the countries affected by the West Africa outbreak; and the rapid response and dedication of the DRC Minister of Health. Without these efforts, it is unlikely this vaccine would be available for several years, if at all.

Read more about the Vaccine Alliance, and how you can contribute to the improvement of access to vaccines globally - in our Impact Story.

Why are vaccinations stalling?

In January and February 2022, there were 17,338 measles cases reported worldwide, UNICEF and the WHO say. This is 79% higher than the 9,665 cases reported over the same period in 2021.

Somalia, Yemen, Nigeria, Afghanistan and Ethiopia are the top five countries with the biggest measles outbreaks in the past year.

The COVID-19 pandemic led to resources being diverted from routine immunization, UNICEF and the WHO say. Not enough availability of the measles vaccine is the main reason for every measles outbreak, they add.

Now there is a risk of larger measles outbreaks. Factors fuelling this include the relaxation of COVID-19 restrictions and the displacement of millions of people from crises and conflict, including the war in Ukraine.

Polio vaccination is also slowing

Polio, a highly infectious disease that can lead to paralysis, is another disease in danger of reemerging, due to the pandemic slowing vaccination efforts. Across North and South America and its associated islands – the region collectively known as the Americas – the vaccination rate for polio in 2020 was 82%. This is the lowest since 1994, when the Americas was certified free of polio, according to The Pan American Health Organization.

Earlier this year, Malawi in south-eastern Africa also reported its first clinically confirmed case of wild polio since 1992.

What needs to happen now?

In 43 countries, 57 vaccination campaigns for preventable diseases were still postponed in April 2022. This includes 19 for measles, putting 73 million children at risk.

UNICEF and the WHO want to see these postponed campaigns restored. Their call is supported by partners including Gavi, the Vaccine Alliance, the Measles & Rubella Initiative and the Bill & Melinda Gates Foundation.

Other steps needed to strengthen immunization programmes include helping health workers and community leaders explain the importance of vaccinations and making sure that COVID-19 vaccination is independently financed, so it’s not paid for out of other vaccination budgets.

As part of their COVID-19 recovery efforts, countries should also develop plans to prevent and respond to outbreaks of vaccine-preventable diseases, says the WHO.