Do I need a vaccine after being bitten by a loach?
Being bitten by a loach usually does not require vaccination; proper local wound care is sufficient. However, if the wound is deep, heavily contaminated, or shows signs of infection, targeted anti-infective treatment may be necessary. Details are as follows:

Loaches themselves do not carry pathogens such as rabies or tetanus, which commonly require vaccination for prevention. Moreover, their bites typically result in superficial wounds with minimal bleeding. In such cases, washing the wound with soap and water, followed by disinfection with iodophor, and keeping the wound clean and dry (avoiding contact with water) are usually enough. Most wounds will heal on their own without the need for additional vaccines.
If the bite wound is deep or if bacteria carried by the loach cause signs of infection—such as redness, swelling, pus, or increased pain—routine vaccination is still not required. However, prompt wound management is essential. If necessary, follow medical advice to use anti-infective medications to prevent the spread and worsening of infection.
When handling loaches in daily life, it is recommended to take preventive measures such as wearing gloves to avoid bites. Immediately treat any bite wound and closely monitor for changes. Avoid scratching the wound with hands, and temporarily reduce consumption of spicy or irritating foods to support wound healing.