Indigenously developed Soberna 2 vaccine of Cuba is found to be 91 percent effective when delivered with Soberna plus booster dose against covid-19 infection.
Cuba will become the first country in Latin America to develop an indigenous vaccine to tackle against Covid-19.
At present, clinical trials have been conducted on its own population. It is also the first Conjugate vaccine against Covid-19.
The vaccine will be given in three doses. Two doses are regular ones while the third one is booster dose and known as Soberna plus.
The vaccines will have a 28 day interval between two doses. Soberna 2 is one among many vaccines that are currently being tested in the country.
All the vaccines under study are protein based. They do not contain virus but only proteins derived from virus that binds to cells and generates immune response.
The vaccine is considered unique due to its conjugate nature. It makes use of deactivated tetanus to combine with binding domain of SARS CoV-2 to increase immune response.
Working of conjugate vaccine
In conjugate vaccine, a weak antigen will be attached to a strong type of antigen to generate a stronger immune response.
This is done because in some cases, the body does not generate a strong response against a weak antigen.