New Covid-19 Variant BA.3.2 Is Spreading and May ‘Evade Immunity,’ CDC Warns – Gizmodo

The Centers for Disease Control and Prevention (CDC) recently issued a warning regarding a new SARS-CoV-2 variant, BA.2.86, often referred to as “Pirola.” First identified in August 2023, this variant has raised concerns due to its high number of mutations, particularly in the spike protein, suggesting a potential for increased transmissibility and evasion of existing immunity from prior infection and vaccination. Its emergence and subsequent detection across multiple continents have prompted intensified global surveillance efforts.

Background: The Evolving Landscape of SARS-CoV-2

The emergence of the BA.2.86 variant is the latest chapter in the ongoing evolution of SARS-CoV-2, the virus responsible for COVID-19. Since its initial identification in late 2019, the virus has continually mutated, giving rise to numerous variants that have shaped the course of the global pandemic. Understanding this evolutionary history is crucial for comprehending the current concerns surrounding new strains like BA.2.86.

The Genesis of a Pandemic

SARS-CoV-2, a novel coronavirus, was first identified in Wuhan, Hubei province, China, in December 2019. Its rapid spread led the World Health Organization (WHO) to declare a Public Health Emergency of International Concern in January 2020 and a pandemic in March 2020. The initial strain, often referred to as the