Discover how Rational Vaccines is using its proprietary technology to combat COVID-19.

Reduce. Contain. Control.

Using our proprietary technology, we are developing rationally engineered, live attenuated viral immunotherapeutic and prophylactic vaccine candidates. Our aim is to help improve lives by reducing the suffering of those infected and reduce the spread of the virus. Our goal is to revolutionize the treatment, prevention, and diagnosis of herpes and herpes-related diseases worldwide. We envision a future where the world is free of herpes.


Focused on ending a
global pandemic.

The herpes simplex virus (HSV) is one of world’s most prevalent infections, negatively impacting the health of billions of people of all ages—and it can be spread when there are no symptoms or sores. Infected individuals are frequently asymptomatic at early stages, and at high risk of transmission. Yet herpes is not routinely screened for, and despite decades of attempts, the current standard of care is failing many patients. There is still no cure, nor is there an effective herpes vaccine.


More than
4.1 billion people
under the age of 50 are infected with HSV.1


At Rational Vaccines,
we envision a world
without herpes.

We are committed to developing advanced, uniquely designed vaccines that may one day safely and effectively treat herpes and protect others from becoming infected. Through precise design and scientific rigor, we are advancing an approach that has helped to eradicate or eliminate some of the world’s most dangerous infections, like smallpox.

To us, that's not impossible. It's rational.