Sarah Bennett
The MMR vaccine is a combined vaccine that protects against measles, mumps, and rubella (German measles). The first dose is typically given to children around 9 months to 15 months of age, with a second dose at 15 months to 6 years of age. The vaccine is administered by injection and has been widely used around the world, with 575 million doses administered as of 2012. The development of the MMR vaccine began in the 1960s with the creation of individual vaccines for measles, mumps, and rubella. These vaccines were then combined into the MMR vaccine by Dr. Maurice Hilleman in 1971. The availability of the MMR vaccine has significantly reduced the number of measles cases and associated deaths worldwide.
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What You'll Learn
The first measles vaccine was developed in 1963
Measles is one of the most contagious diseases humans have ever faced. It is an ancient disease, first described in the 9th century by Persian physician Abū Bakr Muhammad Zakariyyā Rāzī. Before the advent of vaccination, measles was endemic worldwide, and it remains a global epidemic. In the 20th century, advances in health and nutrition in developed countries reduced mortality rates, but the disease continued to cause thousands of hospitalizations annually.
In 1954, a measles outbreak at a boarding school outside Boston, Massachusetts, enabled doctors at Boston Children's Hospital to isolate the measles virus. They took throat swabs and blood samples from infected students, and the culture obtained from 11-year-old David Edmonston successfully led to the cultivation of the virus. This breakthrough allowed doctors to create the first vaccine against measles. John Franklin Enders, often called 'the father of modern vaccines', developed the measles vaccine from the 'Edmonston-B' strain, which was named after David Edmonston and used as the basis for most live-attenuated vaccines today.
From 1958 to 1960, Enders and his team tested their measles vaccine on small groups of children. They then began trials on thousands of children in New York City and Nigeria. In 1961, the vaccine was hailed as 100% effective, and in 1963, Enders and his colleagues transformed their Edmonston-B strain of the measles virus into a vaccine and licensed it for public use in the United States. This marked the beginning of mass vaccination programmes against measles, with individual countries introducing national-level vaccination campaigns in the 1960s.
Between 1963 and mid-1966, approximately 15 million children received one of the new measles vaccines, and the reported incidence of the disease halved. This success inspired a campaign to eliminate measles from the United States in 1967. The availability of the measles vaccine has significantly reduced measles-related deaths worldwide.
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The MMR vaccine was developed in 1971
The MMR vaccine, which stands for measles, mumps, and rubella (German measles) vaccine, was developed in 1971 by Dr Maurice Hilleman and colleagues at Merck. The vaccine was created by combining the recently developed vaccines against measles, mumps, and rubella into a single shot, with one booster dose following. This combination vaccine induces immunity less painfully and more efficiently than separate injections for each disease.
Before the development of the MMR vaccine, measles was a highly contagious disease that was endemic worldwide. In 1963, a vaccine against measles was introduced in the United States, which significantly reduced the number of reported cases. However, measles remained a widespread problem, with outbreaks occurring in 1971 and 1977. The development of the MMR vaccine in 1971 was a significant advancement in the fight against these diseases.
The measles component of the MMR vaccine was improved in 1968 when Dr Maurice Hilleman, a pioneer in vaccine development, passed the virus through chick embryo cells 40 times to weaken it, producing a vaccine with fewer side effects. This weaker version, known as the Edmonston-Enders strain, is still used in some measles vaccines today. The rubella component, Meruvax, was developed in 1967 through propagation using the human embryonic lung cell line WI-38.
The MMR vaccine is typically administered through a subcutaneous injection, with the first dose given at around 12 months of age. A second dose is recommended to ensure immunity, as a small percentage of people may not develop immunity after the first dose. The MMR vaccine has been widely used around the world, with over 575 million doses administered as of 2012. The World Health Organization (WHO) has played a crucial role in expanding immunization programmes, with measles being one of the first targeted diseases in 1974.
The development of the MMR vaccine in 1971 was a significant milestone in the history of medicine, leading to a substantial decrease in the number of cases of measles, mumps, and rubella worldwide.
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A fraudulent research paper in 1998 caused a drop in vaccination rates
The MMR vaccine is a vaccine against measles, mumps, and rubella (German measles). The first dose is generally given to children around 9 months to 15 months of age, with a second dose at 15 months to 6 years of age. The vaccine is administered by a subcutaneous injection.
In 1998, a fraudulent research paper by physician Andrew Wakefield and twelve co-authors was published in the British medical journal The Lancet. The paper, titled "Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive developmental disorder in children", falsely claimed causative links between the measles, mumps, and rubella (MMR) vaccine and colitis and between colitis and autism. The fraud involved data selection and manipulation, as well as undisclosed conflicts of interest.
The paper was instantly controversial, leading to widespread publicity and the convening of a special panel of the UK's Medical Research Council. Despite multiple subsequent studies failing to find any link between the MMR vaccine, colitis, and autism, Wakefield's claims gained momentum in 2001 and 2002 after he published further papers suggesting that the immunisation programme was unsafe. This led to a sharp decline in vaccination uptake and a number of outbreaks of measles around the world, resulting in many deaths and serious permanent injuries.
The Lancet paper was partially retracted in 2004 and fully retracted in 2010, with the journal's editor-in-chief describing it as "utterly false". Wakefield was found guilty by the General Medical Council of serious professional misconduct and was struck off the Medical Register, meaning he could no longer practise as a doctor in the UK. The scientific consensus is that there is no causal connection between MMR or any other vaccine and autism.
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The MMR vaccine is administered via injection
The MMR vaccine was developed in 1971 by Dr Maurice Hilleman, combining the recently developed vaccines against measles, mumps, and rubella into a single shot. A second booster dose is also required. The MMR vaccine is administered via injection, specifically by subcutaneous or intramuscular injection. The dosage for the MMR vaccine is 0.5 mL.
The first dose is generally given to children around 9 months to 15 months of age, with a second dose at 15 months to 6 years of age, with at least four weeks between the doses. The second dose may be given as early as one month after the first dose, and it is recommended for those who fail to develop measles immunity after the initial vaccination. In the US, the second dose is typically administered before entry to kindergarten. In areas where measles is common, the first dose may be given as early as nine months, and the second dose at 15 months.
The MMR vaccine is widely used around the world, with 575 million doses administered since its introduction as of 2012. The vaccine is recommended for all babies and young children, but older children and adults can also receive it if they were not vaccinated when they were younger. The MMR vaccine can be given at any age, and it is important to ensure you are vaccinated if you are travelling to, or living in, a country with a high risk of measles, mumps, or rubella.
The MMR vaccine is considered safe and effective, with common side effects being mild and lasting only a few days. These include a raised, blotchy rash, a high temperature, and swollen glands. More serious side effects, such as a severe allergic reaction, are rare.
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The MMR vaccine is recommended for those without evidence of immunity
The MMR vaccine was first introduced in 1963 to prevent measles. However, it was not until 1971 that Dr Maurice Hilleman combined the vaccines against measles, mumps, and rubella into the MMR vaccine. The MMR vaccine is a live vaccine, meaning it contains a weakened version of the measles, mumps, and rubella viruses. These weakened viruses do not cause the full-blown illness in individuals with healthy immune systems. Instead, the immune system learns to recognize and fight off the viruses, providing immunity.
The MMR vaccine is also recommended for adults who do not have evidence of immunity, with one or two doses required depending on risk factors. Adults who are healthcare personnel, students at post-high school educational institutions, or international travelers are specifically advised to receive two doses of the MMR vaccine if they lack immunity. Additionally, women of childbearing age, especially those from areas where routine rubella vaccination may not occur, should be vaccinated with one dose of the MMR vaccine unless they have presumptive evidence of immunity.
It is important to note that individuals with weakened immune systems or serious allergies to vaccine ingredients should consult with their healthcare provider before receiving the MMR vaccine. Overall, the MMR vaccine is a safe and effective way to protect against measles, mumps, and rubella for those who lack immunity.
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Frequently asked questions
The MMR vaccine was first administered in 1971 when Dr Maurice Hilleman combined the recently developed vaccines against measles, mumps and rubella into a single shot.
The MMR vaccine was modified in 1979 when Dr Stanley Plotkin introduced a more effective rubella vaccine. In 2005, the varicella vaccine was added to create the combined MMRV vaccine.
After two doses of the MMR vaccine, 97% of people are protected against measles, 88% against mumps, and at least 97% against rubella.
The first dose of the MMR vaccine is generally given to children around 9 months to 15 months of age, with a second dose at 15 months to 6 years of age.
