no there is no sickle cell vaccine since it is a genetic disease... but the sickle disease makes you at higher risk dying of corona virus. if you get vaccinated against the corona virus, even if you get covid, you are unlikely to die even at current mutations.

i assumed that since everyone talks about only the one vaccine these days you would know what i mean, but there are actually many other interesting vaccines currently being developed, and hopefully will come soon in the future, like malaria and hiv vaccines.