x

Coronavirus

Vaccine Makers Figuring Out Tweaks

February 15, 2021

WASHINGTON — The makers of COVID-19 vaccines are figuring out how to tweak their recipes against worrisome virus mutations — and regulators are looking to flu as a blueprint if and when the shots need an update.

“It’s not really something you can sort of flip a switch, do overnight,” cautioned Richard Webby, who directs a World Health Organization flu center from St. Jude Children’s Research Hospital.

Viruses mutate constantly and it takes just the right combination of particular mutations to escape vaccination. But studies are raising concern that first-generation COVID-19 vaccines don’t work as well against a mutant that first emerged in South Africa as they do against other versions circulating around the world.

The good news: Many of the new COVID-19 vaccines are made with new, flexible technology that’s easy to upgrade. What’s harder: Deciding if the virus has mutated enough that it’s time to modify vaccines — and what changes to make.

RELATED

LONDON (AP) — The pharma giant AstraZeneca has requested that the European authorization for its COVID-19 vaccine be pulled, according to the EU medicines regulator.

Top Stories

Columnists

A pregnant woman was driving in the HOV lane near Dallas.

General News

NEW YORK – Meropi Kyriacou, the new Principal of The Cathedral School in Manhattan, was honored as The National Herald’s Educator of the Year.

Video

2 Germans, a Spaniard and a Senegalese Killed in Building Collapse in Spain’s Mallorca Island

MADRID (AP) — Spain's National Police on Friday gave details on four people killed when a building housing a bar and restaurant club collapsed on the island of Mallorca.

AUSTIN, Texas  — Families in Uvalde took more legal action Friday on the second anniversary of the Robb Elementary School attack, suing Meta Platforms, which owns Instagram, and the maker of the video game “Call of Duty” over claims the companies bear responsibility for products used by the teenage gunman.

ATHENS - The head of the tax office in Chalkida, Evia and another staff member were detained on Friday after testifying over charges of corruption.

TEL AVIV, Israel  — Egypt said Friday it has agreed to send U.

Enter your email address to subscribe

Provide your email address to subscribe. For e.g. [email protected]

You may unsubscribe at any time using the link in our newsletter.