Many of the vaccines currently being developed and administered to humans to prevent corona are double ‘dose’ vaccines. This means that the vaccine should be given once and then again at regular intervals. Thus one can be vaccinated 2 times.
In this case, the scientists have found a single ‘dose’ vaccine for corona in the context of the yellow fever vaccine at the Rega Institute in KU Louvain, Belgium.
Scientists have developed the vaccine by injecting the genetic sequence of ‘spike protein’ on the surface of the corona virus into the yellow fever vaccine. The vaccine is called Recovax.
Tests of a single dose of the vaccine on hamsters and monkeys have shown that it protects against the corona virus.
It is reported that scientists are preparing for the next phase of the clinical trial of this vaccine.