The origin of measles is thought to have been zoonotic, evolving from rinderpest, an infectious viral disease found in cattle, bison, and other hooved animals.
A precursor to measles began sporadically infecting humans as early as the 4th century BC, and over time evolved to become a distinct virus that infected humans.
The first systematic description of measles, and its distinction from smallpox and chickenpox, is credited to the Persian physician Muhammad ibn Zakariya al-Razi, who lived from 860 to 932 AD and published The Book of Smallpox and Measles.
Sometime between AD 1100 and 1200, the measles virus fully diverged from rinderpest, becoming a distinct virus that infects humans, at a time when medieval European cities had grown large enough to sustain an epidemic.
With the discovery of America and European colonial expansion from the 17th century onwards, measles spread throughout the world from the Renaissance to the 20th century.
In 1529, a measles outbreak in Cuba killed two-thirds of those Indigenous people who had previously survived smallpox, and two years later, measles was responsible for the deaths of half the population of Honduras.
The disease also ravaged Mexico, Central America, and the Inca civilization, leaving behind one of the most catastrophic demographic collapses in human history.
Regions of the world without previous exposure to the measles virus were particularly vulnerable, with outbreaks taking devastating effect in isolated communities such as the Faroe Islands in 1846, Hawaii in 1848, Fiji in 1875, and Rotuma in 1911.
The 1846 Faroe Islands outbreak became a landmark moment in medical history, as measles had not visited the islands in 60 years, leaving nearly the entire population without immunity.
The Danish physician Peter Ludwig Panum was sent by the Danish government to study the severe Faroe Islands epidemic, and this 26-year-old doctor spent five months conducting a remarkable epidemiological study of measles.
Measles killed 20 percent of Hawaii's population in the 1850s, and in 1875, measles killed over 40,000 Fijians, approximately one-third of the total population.
In 1757, Scottish doctor Francis Home discovered that measles was caused by a pathogen by transmitting the disease to healthy individuals using the blood of infected patients.
In 1912, measles became a nationally notifiable disease in the United States, and in the first decade of reporting, an average of 6,000 measles-related deaths were reported each year.
Before vaccination became available, measles was a common and often serious childhood illness, with nearly everyone in the United States contracting measles by adolescence, infecting an estimated 3 to 4 million people each year.
In 1954, John F. Enders and Thomas C. Peebles collected blood samples from ill students during a measles outbreak in Boston, Massachusetts, successfully isolating the measles virus in 13-year-old David Edmonston's blood.
In 1963, John Enders and colleagues transformed their Edmonston-B strain of measles virus into a vaccine and licensed it in the United States, and by 1968 an improved and even weaker measles vaccine was developed by Maurice Hilleman.
By the late 1970s, routine childhood immunization campaigns had cut measles infections by over 90%, and in 2000, measles was declared eliminated in the United States.
Despite this triumph, measles has continued to resurge globally wherever vaccination rates fall, proving that one of humanity's oldest enemies remains far from defeated.
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