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New Vaccine Offers Hope Against Deadly Elephant Virus

10/4/2025

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Summary

Story summary

Chester Zoo researchers developed a vaccine against elephant endotheliotropic herpesvirus (EEHV).
In adult elephants, trials show the vaccine is safe and activates a strong immune response.
EEHV has caused over 100 deaths in elephants in human care and in wild populations.
The next phase tests younger elephants, the most vulnerable.
The team aims to simplify dosing, currently four injections.

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Story summary

Chester Zoo researchers developed a vaccine against elephant endotheliotropic herpesvirus (EEHV).
In adult elephants, trials show the vaccine is safe and activates a strong immune response.
EEHV has caused over 100 deaths in elephants in human care and in wild populations.
The next phase tests younger elephants, the most vulnerable.
The team aims to simplify dosing, currently four injections.