While it is clear that some patients have had a positive test after an initial negative test - and even a recurrence of symptoms months after the initial symptoms - it is unclear whether the positive test and/or recurrence of symptoms is from the same virus recrudescing or from a new infection.
On This Week in Virology recently, they said that it would be invaluable to sequence the virus the first time around and the second time around (in patients who recrudesce) to see whether the two infections were caused by the same virus (in genetic terms), or from a new infection by a genetically different virus.
Either way, it's bad if immunity only lasts a few months, for obvious reasons.
On This Week in Virology recently, they said that it would be invaluable to sequence the virus the first time around and the second time around (in patients who recrudesce) to see whether the two infections were caused by the same virus (in genetic terms), or from a new infection by a genetically different virus.
Either way, it's bad if immunity only lasts a few months, for obvious reasons.