An immediate allergic reaction following the anti-COVID-19 vaccine Pfizer-BioNTech : A case report

Objective:

To date, the vaccine is the only weapon to stop the global pandemic caused by the SARS-CoV-2. But, several clinical cases of complications have been reported in the literature especially allergic reactions.

Case report:

We report a case of 35-year-old woman, known asthmatic with history of a chronic urticaria, an allergic rhinoconjunctivitis and an angioedema after taking NSAIDs. The patient presented 10 minutes after vaccination by Pfizer-BioNTech vaccine, an immediate allergic reaction complicated 12 hours after, by an angioedema.

Discussion:

During the first wave of COVID-19, and after initiation of the vaccination program in Morocco, vaccinating people with severe allergies was not recommended. This reality was changed after the second wave of SARS-CoV-2 Delta, on condition of doing it under medical monitoring. We should propose to all risky persons to take a premedication if needed to avoid such reactions considering the benefits incurred. The use of anti-histamines seems to be necessary. But as in our patient’s case, anti-histamines alone were not sufficient to avoid this local reaction. They probably reduced the intensity of the reaction but did not avoid it. Therefore, we should propose a combination of drugs made by corticosteroids and anti-histamines as a premedication may be a safe alternative to the risky patients and last but not least a close monitoring should be proposed.

Conclusion:

The main purpose of this case if to raise awareness of this side effect among practitioners and make them capable to managing it correctly.

A Rare Case of Henoch-Schönlein Purpura Following a COVID-19 Vaccine-Case Report

In the COVID-19 pandemic era, anti-SARS-CoV-2 vaccination is considered to be the most efficient way to overtake the COVID-19 scourge. Like all medicines, vaccines are not devoid of risks and can in rare cases cause some various side effects. The objective of this case report is to highlight this unusual presentation of Henoch-Schönlein purpura following an anti-COVID-19 vaccination in a 62-year-old adult. The 62-year-old patient admitted to the emergency room for a petechial purpuric rash, sloping, occurring within hours, involving both legs and ascending. The clinical signs also included polyarthralgia and hematuria. Reported in the history the notion of an anti-COVID-19 vaccination 8 days prior to the onset of symptomatology. In the case of our patient, we retain the diagnosis of rheumatoid purpura based on the EULAR/PRINTO/PReS diagnostic criteria. Corticosteroid therapy (prednisone) was started, resulting to a rapid regression of clinical and laboratory symptoms, few days after the treatment. Patient was asymptomatic on subsequent visits. The low number of published cases of post-vaccine vasculitis does not question the safety of vaccines, but knowledge of such complications deserves to be known in order to avoid new immunizations that could have more serious consequences, and to avoid aggravating or reactivating a pre-existing vasculitis.