The Big Story ‘Razor blade throat’ and summer viruses: what you need to know
Jun 26, 2025
Dr. Isaac Bogoch, an infectious diseases specialist and key voice in the COVID conversation, joins the discussion about the newly identified COVID variant NB.1.8.1, informally known as 'razor blade throat,' which has raised concerns due to its painful symptoms. He sheds light on vaccine effectiveness against this strain and offers insights into health risks associated with summer travel, including tropical infections. The conversation also addresses post-pandemic adaptations and the importance of vigilance against respiratory diseases.
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NB1.8.1 Variant Similar to Past Strains
- The NB1.8.1 COVID variant is similar to previous strains with symptoms like sore throat and respiratory issues.
- It poses severe risks primarily to elderly and immunocompromised individuals, but overall impact is less severe than early pandemic years.
Vaccines Still Prevent Severe Illness
- Current COVID vaccines remain effective at preventing severe illness and death from new variants.
- Vaccine benefit is greatest among high-risk groups like the elderly and immunocompromised, despite reduced infection prevention.
Vaccines Adapt but Still Protect
- Vaccine formulas are updated regularly to match circulating COVID strains but the virus continues to mutate.
- Despite imperfect matches, vaccines consistently protect against severe disease, especially for vulnerable people.