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In the practice of ________, scabs from smallpox victims were used to immunize susceptible individuals against smallpox.

Short Answer

Expert verified
The practice of using smallpox scabs to immunize individuals is known as variolation.

Step by step solution

01

Understanding the Historical Practice

The practice in question refers to taking material from a smallpox sore and introducing it into the skin of a person who has not had smallpox. This procedure was meant to trigger a mild infection that would confer immunity against a more severe case of the disease.
02

Identifying the Correct Term

The term that describes this early form of inoculation is 'variolation'. This procedure was used before the development of the smallpox vaccine by Edward Jenner in the late 18th century.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Smallpox Immunization
The fight against the formidable disease of smallpox has a rich history, marked by an early form of immunization known as variolation. From ancient times up until the late 18th century, smallpox was a devastating affliction, prompting the need for a method to protect individuals from its ravages.

Understanding variolation begins with the recognition that it involved the deliberate exposure of susceptible individuals to smallpox in a controlled manner. Material, usually in the form of scabs or pus, was taken from someone infected with a mild case of smallpox and then inserted into the skin or inhaled through the nose by a healthy person. This process aimed to elicit a mild infection, followed by recovery and subsequent immunity to the disease.

While variolation did not always prevent smallpox, it often resulted in a far less severe infection than an uncontrolled exposure would, thus greatly reducing the mortality rate associated with the disease. This method of immunization laid the foundation for modern vaccines and represents an early milestone in the history of medicine.
Historical Vaccination Practices
Long before the term 'vaccination' was coined, societies employed various practices to combat infectious diseases. These historical vaccination practices form an intriguing tableau of humanity's persistent quest to fend off illness.

Variolation was one such practice and it preceded the more scientific approaches developed later. However, its roots can be traced back to ancient China and India, with reports suggesting that Buddhist monks practiced a form of variolation as early as 200 BCE. The knowledge of variolation spread gradually along trade routes to the Ottoman Empire and eventually to Europe and the Americas.

In the Western world, historical records indicate that the influential Lady Mary Wortley Montagu introduced the practice of variolation to England in the early 18th century after witnessing the procedure in Constantinople. This highlights not just a medical but also a cultural exchange, paving the way for more systematic methods of disease prevention.
Edward Jenner Smallpox Vaccine
The pivotal moment in the history of smallpox immunization came with the work of Edward Jenner, an English physician who is often hailed as the father of immunology. Through deliberate and keen observation, he developed the world's first vaccine.

Jenner noticed that milkmaids who had contracted cowpox, a disease similar to but much milder than smallpox, seemed immune to the more severe disease. This led to his groundbreaking experiment in 1796, where he inoculated a young boy with material from a cowpox sore. The boy developed a mild case of cowpox, and when later exposed to smallpox, he remained healthy, proving his immunity.

Jenner's method, called 'vaccination' from the Latin word 'vacca' meaning cow, revolutionized immunization practices and set the stage for the development of vaccines against other diseases. Jenner's contribution to medicine is immense, as his vaccine drastically reduced the prevalence of smallpox and eventually led to the eradication of the disease by the World Health Organization in 1980. This was one of modern medicine's greatest triumphs and a testament to the power of vaccination.

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Most popular questions from this chapter

A single antigen molecule may be composed of many individual ________. a. T-cell receptors b. B-cell receptors c. MHC II d. epitopes

What is the difference between an antigen and a hapten?

What is a superantigen? a. a protein that is highly efficient at stimulating a single type of productive and specific \(\mathrm{T}\) cell response b. a protein produced by antigen-presenting cells to enhance their presentation capabilities c. a protein produced by \(\mathrm{T}\) cells as a way of increasing the antigen activation they receive from antigen-presenting cells d. a protein that activates \(\mathrm{T}\) cells in a nonspecific and uncontrolled manner

Match each type of vaccine with the corresponding example. ___inactivated vaccine \( \quad\) A. Weakened influenza virions that can only replicate in the slightly lower temperatures of the nasal passages are sprayed into the nose. They do not cause serious flu symptoms, but still produce an active infection that induces a protective adaptive immune response. ___live attenuated vaccine \( \quad\) B. Tetanus toxin molecules are harvested and chemically treated to render them harmless. They are then injected into a patient's arm. ___toxoid vaccine \( \quad\) C. Influenza virus particles grown in chicken eggs are harvested and chemically treated to render them noninfectious. These immunogenic particles are then purified and packaged and administered as an injection. ___subunit vaccine \( \quad\) D. The gene for hepatitis B virus surface antigen is inserted into a yeast genome. The modified yeast is grown and the virus protein is produced, harvested, purified, and used in a vaccine.

Which of the following does not occur during the lag period of the primary antibody response? a. activation of helper \(\mathrm{T}\) cells b. class switching to IgG c. presentation of antigen with MHC II d. binding of antigen to BCRs

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