In 1914, a statistician for the Prudential Insurance Company estimated that 1% of all deaths in the temperate zone were caused by measles. He observed that 1–6% of measles cases ended fatally, depending on age, social conditions, and pre-existing health conditions.
In 1954, John Enders and Thomas C. Peebles isolated the measles virus from a 13-year-old boy from the United States, David Edmonston.
As of 1957, birth before 1957 is presumptive evidence of measles immunity because people born before 1957 are likely to have been naturally infected with the measles virus.
In 1957, M.S. Bartlett recognized the concept of critical community size (CCS) in measles, referring to the minimum number supporting measles.
Atypical measles, distinct from modified measles, was reported in recipients of the inactivated measles vaccine used between 1963 and 1967. Atypical measles is characterized by a rash that first appears on the arms and legs, rather than on the head, and can be petechial instead of morbilliform; high fever; and severe pneumonia.
In 1963, the first successful measles vaccine, developed by Maurice Hilleman at Merck, became widely available in the United States. It was associated with post-immunization reactions including fever and rash.
In 1965, the Edmonston B strain was further attenuated to produce the Schwartz strain, to reduce reactions.
A killed measles vaccine was given between 1963 and 1967 but was discontinued in favor of the live-attenuated vaccine due to the risk of atypical measles and inferior protection.
Atypical measles, distinct from modified measles, was reported in recipients of the inactivated measles vaccine used between 1963 and 1967. Atypical measles is characterized by a rash that first appears on the arms and legs, rather than on the head, and can be petechial instead of morbilliform; high fever; and severe pneumonia.
In 1968, the Edmonston B strain was further attenuated to produce the Edmonston-Enders strain, to reduce reactions.
In 1971, the measles vaccine was combined with the mumps vaccine and rubella vaccine to create the MMR vaccine, which was licensed for use in the United States.
In 1975, the Edmonston B measles vaccine was discontinued.
In 1980, 2.6 million people died from measles.
Between 1985 and 1992, in the U.S., deaths occurred in 0.2% of measles cases, but may be up to 10% in people with malnutrition. Most of those who die from the infection are less than five years old.
Between 1987 and 2000, the case fatality rate across the United States was three deaths per 1,000 cases attributable to measles, or 0.3%.
In 1990, 545,000 people died due to measles.
In 1991, a measles outbreak in Philadelphia centered around the Faith Tabernacle Congregation, a faith-healing church discouraging vaccination. Over 1400 people were infected with measles and nine children died.
Between 1985 and 1992, in the U.S., deaths occurred in 0.2% of measles cases, but may be up to 10% in people with malnutrition. Most of those who die from the infection are less than five years old.
From January, to December 2019, 1,282 individual cases of measles were confirmed in 31 states. This is the greatest number of cases reported in the US since 1992.
By 2019 cases had increased to a total of 870,000, the highest since 1996.
In 2024, the number of measles cases in Europe rose to 127,350, the highest caseload since 1997.
Worldwide, measles fell 60% from an estimated 873,000 deaths in 1999 to 345,000 in 2005 due to a vaccination campaign.
Between 1987 and 2000, the case fatality rate across the United States was three deaths per 1,000 cases attributable to measles, or 0.3%.
Between 2000 and 2017, vaccination resulted in an 80% decrease in deaths from measles. In 2000, 2.6 million people died from measles.
In 2000, the WHO established the Global Measles and Rubella Laboratory Network (GMRLN) to provide laboratory surveillance for measles, rubella, and congenital rubella syndrome.
In 2012, the number of deaths due to measles was 78% lower than in 2000 due to increased rates of immunization among UN member states.
In April 2019, there have been 695 cases of measles reported in 22 states. As of April 2019, this is the highest number of measles cases since measles was declared eliminated in 2000.
In the United States, measles affected approximately 3,000 people per million in the 1960s before the vaccine was available. With consistent widespread childhood vaccination, this figure fell to about 1 case per million by 2000.
The United States was declared free of circulating measles in 2000.
From 2001 to 2011, there were 911 cases of measles in the United States.
In 2001, Rinderpest, a cattle virus closely related to the measles virus, was eradicated.
In 2015, a woman in Washington state died of pneumonia as a result of measles. She was the first fatality in the U.S. from measles since 2003.
In 2005, the MMR vaccine was combined with the varicella vaccine to create the MMRV vaccine, which was licensed.
Worldwide, measles fell 60% from an estimated 873,000 deaths in 1999 to 345,000 in 2005 due to a vaccination campaign.
Between 2007 and 2017, death occurred between two and three cases out of 10,000 in England and Wales.
Estimates for 2008 indicate deaths fell further to 164,000 globally, with 77% of the remaining measles deaths in 2008 occurring within the Southeast Asian region.
From 2001 to 2011, there were 911 cases of measles in the United States.
In 2011, German anti-vaccination campaigner Stefan Lanka offered €100,000 to anyone who could scientifically prove measles is caused by a virus and determine the virus's diameter, claiming the illness is psychosomatic and the virus doesn't exist. This sparked controversy when evidence was provided but rejected, leading to a legal battle.
In 2011, the WHO estimated that 158,000 deaths were caused by measles. This is down from 630,000 deaths in 1990.
In 2012, the number of deaths due to measles was 78% lower than in 2000 due to increased rates of immunization among UN member states.
In 2013–14, there were almost 10,000 cases in 30 European countries. Most cases occurred in unvaccinated individuals and over 90% of cases occurred in Germany, Italy, Netherlands, Romania, and United Kingdom.
Between October 2014 and March 2015, a measles outbreak in the German capital of Berlin resulted in at least 782 cases.
In late December 2014, an outbreak believed to have originated from Disneyland theme park in California was responsible for infecting 147 people in seven U.S. states, Mexico, and Canada. 48% of the cases were unvaccinated.
By 2014, global vaccination programs had reduced the number of deaths from measles to 73,000.
In 2014, a measles outbreak in Ohio began when two unvaccinated Amish men returned from missionary work in the Philippines. The outbreak grew to 383 cases across nine counties, with 89% occurring in unvaccinated individuals.
In 2014, the CDC stated that endemic measles, rubella, and congenital rubella syndrome had not returned to the United States.
In the spring of 2014, an estimated 8,500 measles cases were reported in Vietnam as of 19 April, with 114 fatalities; as of 30 May, 21,639 suspected measles cases had been reported, with 142 measles-related fatalities.
Between October 2014 and March 2015, a measles outbreak in the German capital of Berlin resulted in at least 782 cases.
From 4 January to 2 April 2015, 159 cases of measles were reported to the CDC, with 70% linked to an earlier exposure in December 2014.
In 2015, a U.S. woman in Washington state died of pneumonia resulting from measles. She was the first measles fatality in the U.S. since 2003. The woman had been vaccinated but was taking immunosuppressive drugs.
On 26 February 2025, the first measles death since 2015 was reported to be that of an unvaccinated school-aged child in West Texas.
In August 2016, at least 40 children died during a measles outbreak in the Naga Self-Administered Zone in a remote northern region of Myanmar, probably caused by lack of vaccination in an area of poor health infrastructure.
Between 2000 and 2016, global cases decreased by 84%.
Brazil won a measles elimination certificate by the Pan American Health Organization in 2016, but the Ministry of Health has proclaimed that the country has struggled to keep this certificate, since two outbreaks had already been identified in 2018, one in the state of Amazonas and another one in Roraima, in addition to cases in other states.
Data from 2016 to 2018 show that the most frequently detected measles virus genotypes are decreasing, suggesting that increasing global population immunity has decreased the number of chains of transmission.
In 2016, a Cochrane review of two randomised controlled trials (RCTs) involving 260 children with measles compared vitamin A to placebo. The authors concluded that no trials were found that assessed whether vitamin A supplementation in children with measles prevents blindness.
In 2016, a record low of 4,400 cases in Europe were reported.
In 2016, as a result of widespread vaccination, measles was declared eliminated from the Americas.
In 2016, the spread of measles had been interrupted in Brazil, with the last-known case twelve months earlier in the state of Ceará.
In June 2017, the Maine Health and Environmental Testing Laboratory confirmed a case of measles in Franklin County. This was the first case of measles in Maine in 20 years.
After being declared eliminated from the Americas in 2016, measles cases reappeared in 2017.
As of 2017, about 85% of children worldwide had received their first dose of measles vaccine, leading to an 80% decrease in deaths from measles between 2000 and 2017. However, rates of disease and deaths increased from 2017 on due to a decrease in vaccination.
Between 2007 and 2017, death occurred between two and three cases out of 10,000 in England and Wales.
From 2017, a measles resurgence in Europe started to occur with numbers increasing in that year to 21,315 cases, with 35 deaths.
In 2017, a review of measles's reproductive number estimates gave a range of 3.7 to 203.3, which varies beyond the frequently cited range of 12 to 18.
In April 2019, New York Mayor Bill de Blasio declared a public health emergency because of "a huge spike" in cases of measles where there were 285 cases centred on the Orthodox Jewish areas of Brooklyn in 2018, while there were only two cases in 2017.
There were 142,300 measles related deaths globally in 2018, of which most cases were reported from African and eastern Mediterranean regions. These estimates were slightly higher than that of 2017, when 124,000 deaths were reported due to measles infection globally.
In July 2018, a measles case occurred in Portland, Oregon, exposing 500 people, with 40 lacking immunity and being monitored by county health officials.
By August 2018, Brazil had struggled to keep its measles elimination certificate due to outbreaks in the states of Amazonas and Roraima, as well as cases in other states, totaling 1,053 confirmed cases. The contagion was related to the importation of the virus, especially from Venezuela.
In October 2018, a measles outbreak began in Brooklyn, with more than 200 cases reported through February 2019, tied to the Orthodox Jewish community.
After being declared eliminated from the Americas in 2016, measles cases reappeared in 2018.
As of 2018, measles remains a leading cause of vaccine-preventable deaths in the world.
Data from 2016 to 2018 show that the most frequently detected measles virus genotypes are decreasing, suggesting that increasing global population immunity has decreased the number of chains of transmission.
In 2018, a measles outbreak resulted in well beyond 115,000 cases and over 1,200 deaths.
In 2018, there were 285 cases of measles centred on the Orthodox Jewish areas of Brooklyn
In 2019, the total number of cases worldwide climbed to 869,770. Cases reported in the first three months of 2019 were 300% higher than in the first three months of 2018, with outbreaks in every region of the world. By mid-November, there were over 413,000 cases globally, with an additional 250,000 cases in DRC.
In preliminary figures for 2018, reported measles cases in Europe increased 3-fold to 82,596 in 47 countries, with 72 deaths; Ukraine had the most cases (53,218).
The measles vaccination rate in Samoa was from 31 to 34% in 2018, before the vaccination campaign.
There were 142,300 measles related deaths globally in 2018, of which most cases were reported from African and eastern Mediterranean regions. These estimates were slightly higher than that of 2017, when 124,000 deaths were reported due to measles infection globally.
From October 2018 to February 2019, a measles outbreak in Brooklyn reported more than 200 cases, tied to the Orthodox Jewish community.
In April 2019, a resurgence of measles occurred, tied to parents choosing not to vaccinate. Cases were first reported in Washington state in January, with an outbreak in Clark County. New York Mayor Bill de Blasio declared a public health emergency due to a "huge spike" in measles cases.
As of April 2019, 695 cases of measles had been reported in 22 states, the highest number of cases since measles was declared eliminated in 2000.
From May 2019, a measles outbreak happened among the Malaysian Orang Asli sub-group of Batek people in the state of Kelantan, causing the deaths of 15 from the tribe.
From January to December 2019, 1,282 individual cases of measles were confirmed in 31 states. This is the greatest number of cases reported in the US since 1992, with 128 hospitalizations and 61 reporting complications.
In December 2019, a vaccination campaign in Samoa brought the measles vaccination rate to an estimated 94% of the eligible population.
After being declared eliminated from the Americas in 2016, measles cases reappeared in 2019.
By 2019 cases had increased to a total of 870,000, the highest since 1996.
In 2019, a measles outbreak resulted in nearly 5,000 deaths and 250,000 infections, spreading to all provinces in the country, with most deaths among children under five. The WHO reported this as the world's largest and fastest-moving epidemic.
In 2019, the total number of cases worldwide climbed to 869,770. Cases reported in the first three months of 2019 were 300% higher than in the first three months of 2018, with outbreaks in every region of the world. By mid-November, there were over 413,000 cases globally, with an additional 250,000 cases in DRC.
After being declared eliminated from the Americas in 2016, measles cases reappeared in 2020.
Following the end of the 2019 outbreak, reported measles cases fell to pre-outbreak levels with 13 cases reported in 2020.
In 2020, the number of cases reported was lower compare to 2019. According to the WHO, the COVID-19 pandemic hindered vaccination campaigns in at least 68 countries, including in countries that were experiencing outbreaks, which caused increased risk of additional cases.
Following the end of the 2019 outbreak, reported measles cases fell to pre-outbreak levels with 49 cases reported in 2021.
Following the end of the 2019 outbreak, reported measles cases fell to pre-outbreak levels with 121 cases reported in 2022.
In 2022, there were an estimated 136,000 measles deaths globally, mostly among unvaccinated or under vaccinated children under the age of 5 years.
In November 2024, the WHO and CDC reported that measles cases increased by 20% in 2023, primarily due to insufficient vaccine coverage in the world's poorest and conflict-affected regions, increasing from about 8.6 to 10.3 million cases.
In February 2024, the World Health Organization said more than half of the world was at risk of a measles outbreak due to COVID-19 pandemic-related disruptions. All the world regions have reported such outbreaks with the exception of the Americas, though these could still be expected to become hotspots in the future.
In November 2024, the WHO and CDC reported that measles cases increased by 20% in 2023, primarily due to insufficient vaccine coverage in the world's poorest and conflict-affected regions, increasing from about 8.6 to 10.3 million cases.
In 2024, Europe experienced a significant increase in measles cases, with 127,350 cases reported, the highest since 1997. This represented a third of global measles cases, with Romania being the major center of the outbreak reporting 30,692 cases.
In 2024, a measles outbreak was declared in the Bangsamoro region in the Philippines with at least 592 cases and 3 deaths.
In March 2025, the CDC recorded 483 confirmed cases across 20 states. This exceeds the entire 2024 total that was only 285.
As of February 2025, a measles outbreak was ongoing amongst unvaccinated communities in Texas and New Mexico. On 26 February 2025, the first measles death since 2015 was reported in West Texas. The confirmed number of measles cases was 124, with most cases in children ages 5–17.
As of March 2025, the CDC recorded 483 confirmed measles cases across 20 states, resulting in 2 deaths and 70 hospitalizations. This exceeds the entire 2024 total of 285.
As of May 2025, in the Southwest United States measles outbreak, Secretary of Health and Human Services Robert F. Kennedy Jr. has nevertheless continued to endorse vitamin A during the measles epidemic, along with other unscientific, non-vaccine measures, a response for which he has been widely criticized.
As of August 2025, an outbreak in Alberta resulted in 1800 confirmed measles cases, prompting health experts to advise Albertans to update their measles vaccinations.
After being declared eliminated from the Americas in 2016, measles cases reappeared in 2025.
In the 2025 U.S. outbreak, children are presenting at hospitals with measles and hypervitaminosis A because their parents were administering vitamin A sources (supplements or cod liver oil) as attempts of protection before the children became ill with measles.
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