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Omicron variant

The Omicron variant of COVID-19, including its subvariants and impact on vaccine formulation and public health guidance.

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Jan 19, 2026
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What are current public health recommendations for booster timing and populations at higher risk in late 2025?

Public health guidance for COVID-19 boosters in late 2025 centers on a narrowed, risk-based approach: updated boosters are advised seasonally—ideally before or during fall/winter waves—for older adult...

Jan 8, 2026

Do natural infection and vaccine-induced spike protein elicit different immune responses (neutralizing antibodies, T cell profiles) and what clinical implications does that have?

Natural infection and spike‑only vaccination produce overlapping but measurably different immune fingerprints: vaccines—particularly mRNA platforms—tend to elicit higher early anti‑spike/RBD antibody ...