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Official Description

Japanese encephalitis virus vaccine, for subcutaneous use

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 90735 refers to the Japanese encephalitis virus vaccine, which is administered via subcutaneous injection. Vaccines are designed to provide active, long-term immunity by stimulating the recipient's immune system to recognize and combat specific pathogens. Unlike immune globulins that offer temporary, passive immunity, vaccines work by introducing altered forms of viruses or bacteria, prompting the immune system to produce its own antibodies. This process enables the body to "remember" how to generate these antibodies upon future exposure to the same antigen. The Japanese encephalitis virus vaccine specifically targets the Japanese encephalitis virus, which is transmitted through the bites of infected mosquitoes, particularly those that breed in rice fields. This virus is a significant public health concern in Asia, as it is the leading cause of encephalitis in the region, with mortality rates reaching as high as 60%. The administration of this vaccine is crucial for preventing the disease and its severe complications. It is important to note that this code solely represents the vaccine product itself and does not encompass any associated services or procedures.

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