How long after vaccination can I get the injection site wet?
Feb 18, 2025
Source: Cainiu Health
Dr. Bai Hongmei
Introduction
Most vaccines, including but not limited to influenza vaccine, measles vaccine, and pneumococcal vaccine, can come into contact with water immediately after administration. This is because vaccines are typically delivered via intramuscular injection, and cleanliness of the skin surface does not affect the vaccine's effectiveness. However, the injection site may experience mild redness, swelling, or pain, and cleansing should be done gently.
Generally, it is safe to get the injection site wet immediately after vaccination. However, in some cases, it may be necessary to wait 6 to 24 hours before getting the site wet, depending on specific circumstances and the type of vaccine.
Most vaccines, including but not limited to influenza vaccines, measles vaccines, and pneumococcal vaccines, allow immediate contact with water after administration. This is because vaccines are usually given via intramuscular injection, and surface cleaning of the skin does not affect the vaccine's effectiveness. However, there may be slight redness, swelling, or pain at the injection site, so gentle handling is advised when washing.
In hot summer months, due to higher temperatures and enhanced tissue circulation, injured tissues tend to repair more quickly, allowing contact with water 6 to 8 hours after vaccination. For elderly individuals with weaker constitutions or reduced skin elasticity, the recovery at the injection site may be slower. To reduce the risk of infection, it is advisable to wait approximately 24 hours before exposing the site to water.
After vaccination, regardless of whether the injection site gets wet or not, it is important to keep the area clean and avoid vigorous rubbing or using excessively hot water, in order to minimize the risk of infection.
