Chief Critic

Tedros Adhanom Ghebreyesus, the leader of the World Health Organization, warned last week against countries lifting restrictions and claiming victory over the virus prematurely. “This virus is dangerous, and it continues to evolve before our very eyes,” he said. Continued restrictions are vital to stop transmission of the virus, he added, in response to countries relaxing measures.

What To Watch For

“Stealth” omicron BA.2. A close relative of the omicron variant—known as BA.2 and called “stealth omicron” by some scientists—is more infectious than the original omicron variant and is rapidly overtaking it in some parts of the world. It does not appear to cause more serious disease, as with the original variant, though experts warn it could lead to more hospitalizations and deaths with more people getting infected.

Follow me on Twitter. Send me a secure tip.