'Medical Memoir' is a Health & Me series that delves into some of the most intriguing medical histories and unveils how medical innovations have evolved over time. Here, we trace the early stages of all things health, whether a vaccine, a treatment, a pill, or a cure.Maggie was diagnosed with Leukemia at the age of 2.5-year-old, fighting cancer at a young age, she survived after another two and half years of treatment, but it left her in a very vulnerable state. Her immune system took a big hit, even a common cold could be dangerous for her. What followed was Maggie’s parents' great efforts to ensure their child gets the best childhood, while making sure she stays safe. But no matter how safe you are or how much you try to keep your loved ones safe, things do not go as planned. Despite their efforts, during a routine visit to her oncologist, Maggie's parents were contacted about a measles case that was known to be in the clinic at the same time Maggie was. Every rash, cold or cough after that seemed like their nightmare come true, however, Maggie was lucky this time because she wasn’t infected. This is not just a story, but the reality of Dr. Tim Jack, who spoke to the Vaccinate Your Family initiative, urging people not just to vaccinate to take care of their children, but also to ensure the safety of everyone around them. But what significance does this story have for our health? What do we need to be aware of measles? A household name among diseases, measles, is considered to be one of the world’s most contagious diseases. Causing the deaths of millions, the disease impacts the respiratory tract and then slowly spreads throughout the body. Vaccination was the reason why we were able to control the disease in the 1960s, before which the estimated death each year was said to be 2.6 million death each year, according to the World Health Organization (WHO).How Old Is Measles?WHO states that the records of the disease can be traced back to the 9th century by a Persian doctor named Abū Bakr Muhammad Zakariyyā Rāzī. It became more common around the world starting in the 16th century as people traveled more. In 1757, a Scottish doctor named Francis Home discovered that measles was caused by a germ. He showed this by taking blood from sick people and giving the disease to healthy individuals. Places that had never seen the measles virus before were hit very hard. Outbreaks caused a lot of sickness and death in isolated communities, like the Faroe Islands in 1846, Hawai'i in 1848, Fiji in 1875, and Rotuma in 1911.Root Cause Of Epidemics And Mass Death Before vaccines, measles was always present around the world, causing epidemics. In richer countries, better healthcare and nutrition meant fewer people died from measles by the 20th century. While antibiotics couldn't fight the virus itself, they could help with complications like bacterial pneumonia. Still, common problems like ear infections, croup, diarrhea, and pneumonia led to thousands of hospital stays each year. A more serious complication, encephalitis (swelling of the brain), could cause brain damage, loss of hearing or sight, or even death. Globally, the death rates remained very high, with about 30 million cases and over 2 million deaths every year. The First Measles Vaccine In 1954, a measles outbreak at a boarding school near Boston gave doctors a chance to try and find the measles virus. They took samples from sick students. A doctor named Thomas Peebles successfully grew the virus from a sample taken from an 11-year-old boy named David Edmonston. This success allowed doctors to create the very first vaccine against measles. John Franklin Enders, who was Peebles's boss and is often called "the father of modern vaccines," developed the measles vaccine from a specific strain of the virus called 'Edmonston-B', named after David. This strain is still used today as the basis for most measles vaccines. Enders and his team tested the vaccine on small groups of children from 1958 to 1960. After that, they started larger trials with thousands of children in New York City and Nigeria. In 1961, the vaccine was declared 100% effective, and the first measles vaccine was approved for public use in 1963.Global Vaccination Efforts Begin Starting in the 1960s, individual countries began large-scale vaccination programs against measles. The first international measles vaccination efforts began in Africa in 1966. The World Health Organization (WHO) worked with governments in over 20 newly independent African countries, along with other organizations, to give vaccinations. Their goal was to control measles and also get rid of smallpox. Despite challenges, like keeping the heat-sensitive vaccine cold during transport and storage, these campaigns showed that vaccination worked against measles. By May 1967, The Gambia became the first country where the measles virus stopped spreading. In 1968, Dr. Maurice Hilleman, a key figure in vaccine development, created an improved measles vaccine. He weakened the virus by passing it through chick embryo cells 40 times. This resulted in a vaccine that caused fewer severe side effects. This weaker version, known as the Edmonston-Enders strain, led to some of the strains still used in measles vaccines today. In 1971, Hilleman combined the recently developed vaccines for measles, mumps, and rubella into a single shot called the MMR vaccine. In 2005, the chickenpox (varicella) vaccine was added to create the MMRV vaccine. Standalone measles vaccines are still available in many countries.Worldwide Vaccination and Challenges In 1974, measles was one of the first diseases targeted by the WHO when they started a program to expand vaccination efforts globally. Widespread childhood vaccination has dramatically reduced measles cases worldwide. WHO now suggests vaccinating babies at 9 months in areas where measles is common, and at 12–15 months in other areas. A second dose is recommended for all children, which is very important because about 15% of children don't get full protection from just one dose. Why High Vaccination Rates are Crucial?Because measles spreads so easily, a very high percentage of people need to be immune (at least 95%) to prevent large outbreaks. If vaccination rates drop too low, outbreaks can happen again when the disease is brought back into a community. Besides the suffering measles causes, controlling outbreaks is expensive and takes resources away from other healthcare services. Measles deaths still occur in many countries, especially where vaccination programs have gaps. For example, in the Democratic Republic of the Congo, 7,800 people died from measles during an outbreak between 2018 and 2020, compared to 2,299 deaths from Ebola in the same period.Eradication Efforts and Setbacks The Americas region was declared free of endemic measles in 2016—the first WHO region to achieve this. However, this status was lost two years later due to a measles outbreak. This outbreak started because of a crisis in one country that led to gaps in vaccination and slow response. The virus then spread to neighboring countries, where it was eventually controlled. To address these issues, the Pan American Health Organization (PAHO) has been training countries on how to quickly respond to prevent measles and rubella from spreading, improving disease tracking, and launching new, high-quality follow-up vaccination campaigns. Between 2000 and 2023, measles vaccination prevented over 60 million deaths worldwide. However, despite having a safe and affordable vaccine, global measles deaths continued to rise before the COVID-19 pandemic. In 2019, there were over 207,000 measles deaths globally, which was the highest number of reported cases in 23 years.Is Measles Still A Cause Of Concern? According to Harvard Health as of July 2025, there have been 1,288 confirmed measles cases across 38 states in the US, primarily among children. This is the highest number of cases since 2000, the year measles was declared eliminated in the country. This rise in cases is mainly because fewer people are getting vaccinated. Across the country, measles vaccination rates for school kids dropped from 95% in 2019 to 92% in 2023. In some areas where outbreaks are happening, like parts of west Texas, the vaccination rate is as low as 82%. This leaves many people unprotected. A big reason for the current cases is that 96% of recent infections were in people who weren't vaccinated or hadn't completed their shots. As the history shows, measles outbreaks can be stopped. The MMR vaccine (Measles, Mumps, Rubella) is very effective, with two doses providing 97% protection, and it's very safe. Side effects are usually mild, like a sore arm or low fever. The false idea that vaccines cause autism has been proven wrong, but this misinformation has made some people hesitant to get vaccinated. As a responsible citizen, one must ensure they keep in touch with healthcare professionals and keep the safety of their loved ones as well as everybody else around them.