Studies of patients have shown cells in their bodies remember the coronavirus for at least eight months after infection and naturally trigger an immediate immune response.
As scientists worldwide analysed the workings of COVID-19, they found antibodies against the virus start to weaken in the first few months after infection, raising concerns that immunity might be quickly lost.
But immunologists in Australia have made a crucial discovery: specific cells in the body continue to memorise the virus and how to fight it.
