Shortly after the onset of the coronavirus pandemic, different vaccines were developed to combat it. The vaccines had different mechanisms and triggered cellular and humoral immune responses against the virus. In addition to their positive effects, various side effects have been reported for them. They rarely cause severe complications. They can also rarely trigger latent infections. The present case report presents a patient who developed herpes simplex encephalitis after receiving the second dose of the Covaxin (BBV152).
Pair particle creation is a well-known effect on the domain of field theory in curved space-time. It is shown that the entanglement generations for spin-0 and spin-1/2 modes are different in Friedmann-Robertson-Walker (FRW) space-time. We consider the spin-1 particles in FRW space-time using Duffin-Kemmer-Petiao (DKP) equation and obtain a measure of the generated entanglement. Also, we consider the spin-3/2 particles. We argue that the absolute value of the spin does not play any role in entanglement generation and the differences are due to the bosonic or fermionic properties.
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