key: cord-0863315-s0l5smj9 authors: Mungmunpuntipantip, Rujittika; Wiwanitkit, Viroj title: COVID-19 reinfection in a kidney transplant recipient date: 2021-07-19 journal: Nefrologia DOI: 10.1016/j.nefro.2021.07.002 sha: 2e3df2267aeb80fbb9636f7489e0d1861311b8db doc_id: 863315 cord_uid: s0l5smj9 nan ." A reinfection of COVID-19 is possible in either normal or immunocompromised host. The continuous mutation occurs and it can cause the problem. At present, a bigger concern is on the post vaccination COVID-19. The vaccine is presently suggested to everyone and if an already infected transplant recipient gets COVID-19 vaccine, he/she can still at risk to get reinfection. For the present case, the described situation is matched and it can be a good case study. However, another possibility that should be mentioned is the possibility of long chronic asymptomatic carrier of virus after the first infection. Long COVID-19 becomes a new condition that requires further studies. It is already reported for a persistence of disease for many months [2] . Before discharge of a case, the confirmation for negative PCR is usually requires, although it might not be performed in some resource limited area (such as in Indochina). However, there is usually no follow-up PCR test for reconfirming for no false negative PCR of the first time PCR result before discharge. Funding None COVID-19 reinfection in a kidney transplant recipient, time for rethinking? Nefrologia Persistent symptoms after Covid-19: qualitative study of 114 "long Covid" patients and draft quality principles for services