The Emergence of the Omicron (B.1.1.529) SARS-CoV-2 Variant: What is the Impact on the Continued Pandemic?

SARS-CoV-2 reinfections with BA.1 (Omicron) variant among fully vaccinated individuals in the northeast of Brazil

“…Recent studies have demonstrated that Omicron-infected cases tended to cause mild symptoms such as pharyngitis, headache, nasal [29] which corroborates with our data. Despite the fact that three subjects have a booster, with the third/additional dose, they developed symptomatic COVID-19, as others with complete vaccination and previous history of COVID-19 [7].…”

Post‐COVID-19 syndrome: assessment of short- and long-term post-recovery symptoms in recovered cases in Saudi Arabia

“…One study showed that the risk of having persistent symptoms > 28 days post-vaccination breakthrough infection was associated with an Odd Ratio (OR) of 0·51 in those who received two doses of the vaccine [ 49 ]. Thus, it is important to study the effects of vaccination and the contribution of different variants on the development of this syndrome, as these variants may cause different severity of COVID-19 [ 34 , 55 ].…”

Predictors of poor outcome in tocilizumab treated patients with Sars-CoV-2 related severe respiratory failure: A multicentre real world study

“…Severe respiratory failure represents the most feared manifestation of SARS-CoV2 infection with potential devastating consequences, independently from the different pandemic waves and virus variants. Despite significant progress in the prevention of SARs-CoV2 infection by using different strategy such as closure of activities and borders, movement restriction, social distancing and vaccination, appropriate management of SARs-CoV2 related severe respiratory failure remains a cumbersome problem in clinical practice and for the healthcare systems [1] , [2] . Cytokine storm represents the cornerstone of respiratory failure associated with pulmonary damage in SARS-CoV-2 infection [3] .…”