Paraviral cutaneous manifestations associated to SARS-CoV-2 Omicron variant.

BACKGROUND: The spreading of the SARS-CoV-2 Omicron variant is probably due to its increased transmissibility and ability to escape from neutralising antibodies. Cutaneous manifestations have been reported after infection with the Omicron strain, consisting mainly of generalised urticarial eruption and prickly heat rash, also known as miliaria, that can persist for several days. Here the impact of Omicron SARS-CoV-2 on skin was investigated. METHODS: The case series of 10 patients with SARS-CoV-2 Omicron variant-related cutaneous manifestations were described; moreover, skin derived cells were challenged in vitro with SARS-CoV-2 Omicron variant. RESULTS: The main clinical cutaneous features observed were urticarial lesions lasting more than 24 h, mainly involving the trunk and sometimes extending to the extremities, and miliaria presenting with clusters of small sweat-filled vesicles, sometimes surrounded by slight erythema. HaCaT keratinocytes, BJ fibroblast cell lines and outer root sheath (ORS) keratinocytes were not susceptible to SARS-CoV-2 Omicron variant infection; they also did not present any evident cytopathic effect or modification of cells viability. CONCLUSION: Our findings suggests that, despite the high number of nucleotide mutations in the spike protein of SARS-CoV-2 Omicron variant, responsible to the higher transmissibility of this virus, and the increased reports of cutaneous manifestation in COVID-19 affected patients, the virus is not able to directly infect and damage the keratinocytes and fibroblasts, thus suggesting an indirect virus-induced activation of the immune system as the major pathogenetic driver.

Annoying Skin Reaction Among The Medical Staff Using Personal Protective Equipment During COVID-19 (preprint)

Backgrounds: the medical staff remains liable to COVID-19. Healthcare institutions must give offer to the supply of "personal protective equipment" to them, with the prolonged contact with this equipment that may cause a variety of skin diseases.Purpose: To shed light on the cutaneous abnormal reactions to the "personal protective equipment" among the medical staff and offers solutions.Methods: This cross-sectional study conducted for the medical staff that involved doctors, dentists, pharmacists, and nurses in the high-risk Ramadi General Teaching Hospital and low-risk Private Clinics, between 4-10 July 2020, at the time after the rise in COVID-19 patients in Anbar governorate, Iraq. A thorough quantitative descriptive research included age, gender, the duration and type of used masks, gloves, Goggles/face shield, and/or gown. About 23 questions described the adverse skin reactions chiefly that involve the skin. Results: A total of 196 participants were recruited for the online questionnaire, including (49.5%) doctor, (15.3%) dentist, (16.8%) pharmacist, and (18.4%) nurse, with a significant involvement between 20-29 years old age. The use of the mask and glove were associated significantly with an adverse skin reaction, like a wound, dry lips, Acne and/or folliculitis, hand dryness, erythema, itching, wrinkle, nail fracture. While workers who regularly used gowns had a negative correlation with adverse skin reactions including erythema with pruritus of trunk and shoulders, miliaria, and pityriasis versicolor. Goggles/face shield did not report adverse skin problems,Conclusions: The medical staff uses personal protective equipment that may develop mild dermatological adverse effects. It needs early diagnosis and treatment. There is dermatological advice that may be helpful to avoid these unwanted effects.