Thai PBS Thai PBS
Omicron’s new BA.4, BA.5 subvariants: How worried should we be?

Omicron’s new BA.4, BA.5 subvariants: How worried should we be?

13 Sept 20:38 Key points summarised by AI
  • Omicron subvariants BA.4 and BA.5 are rapidly dominating global COVID-19 infections, accounting for over 50% of cases in Thailand and driving new outbreaks in more than 110 countries.
  • The World Health Organization (WHO) classifies BA.4 and BA.5 as 'variants of concern' due to their enhanced transmissibility and ability to evade immunity from previous infections and first-generation vaccines.
  • Despite their high transmissibility, studies suggest BA.4 and BA.5 do not cause more severe symptoms or higher fatality rates than earlier Omicron subvariants, especially given widespread immunity from vaccinations and prior infections.
  • Thai health authorities are monitoring the subvariants and recommend booster shots for vulnerable individuals, along with continued mask-wearing and hand hygiene, but have no plans for new stringent measures.
Read full article
Analysis 1/1
Skip > Skip >