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Revista Habanera de Ciencias Médicas
versión On-line ISSN 1729-519X
Resumen
GUANCHE GARCELL, Humberto y BARBAN ARIAS, Reynaldo. Reinfection, immunity and prevention of transmission of COVID-19. Rev haban cienc méd [online]. 2021, vol.20, n.4 Epub 10-Ago-2021. ISSN 1729-519X.
Introduction:
The duration of natural immunity generated by COVID-19 is yet to be defined, which determines the probable reinfection.
Objective:
To analyze issues related to natural infection and the need to maintain prevention practices regarding a case of reinfection in a health care worker.
Case presentation:
Forty-eight-year-old female patient without comorbidities who was diagnosed with COVID-19 in June 2020 and March 2021, in both cases as a mild symptomatic disease. Twenty-four hours after the onset with headache, dizziness, and dry cough, the diagnosis of SARS CoV-2 infection was confirmed by positive PCR and cycle threshold (CT) at 24.84. Nine months and nine days after original infection, and two days after receiving the BNT162b2 vaccine (Pfizer-BioNTech), the patient began with general malaise, dry cough, runny nose, and sore throat, with a positive PCR and CT of 17.61.
Conclusions:
The possibility of reinfection by COVID-19 points to the need to strengthen transmission prevention practices in healthcare facilities as long as scientific evidence provides us with more effective resources for its control.
Palabras clave : COVID-19; SARS CoV-2; reinfection; natural immunity; scientific evidence.