Delta variant
HealthThe ‘Gryphon’ family of COVID variants is spreading globally—but their bark may be a lot worse than their bite
By Erin PraterJanuary 12, 2023
HealthCan you catch COVID-19 twice in 20 days? A Spanish health care worker did, suggesting previous infections offer little protection against Omicron
By Sophie MellorApril 21, 2022
HealthHere are the COVID subvariants behind the latest rise in cases—including the most contagious strain dominating the country
By Andrew MarquardtApril 16, 2022
HealthDoctors say the pandemic is far from over amid BA.2’s emergence: ‘We are probably only in the 4th inning’
By Andrew MarquardtApril 12, 2022
By Andrew MarquardtApril 8, 2022
HealthYoung child hospitalizations rose 5-fold during the Omicron surge versus Delta. But a CDC report found a silver lining
By Erin PraterMarch 17, 2022
HealthMeet ‘Deltacron,’ the Delta-Omicron hybrid COVID variant acknowledged by the World Health Organization this week
By Erin PraterMarch 11, 2022
MagazineInside Moderna’s plan to battle Omicron and develop a booster that works against any future variants
By Erika FryJanuary 30, 2022
Health‘Stealth Omicron’ vs Omicron: What we know about the latest variant and how it differs from the original
By Andrew MarquardtJanuary 25, 2022
By David MeyerJanuary 25, 2022
By Fiona Rutherford and BloombergJanuary 21, 2022
HealthOmicron may cut future severity of COVID and protect against the Delta variant, South Africa study finds
By Antony Sguazzin and BloombergJanuary 18, 2022
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