2021, Number 4
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Revista Habanera de Ciencias Médicas 2021; 20 (4)
Reinfection, immunity and prevention of transmission of COVID-19
Guanche GH, Barbán AR
Language: Spanish
References: 11
Page: 1-4
PDF size: 1202.29 Kb.
ABSTRACT
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.
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