
Mix-and-match J&J Covid booster raised immune response after Pfizer vaccine, study finds
CNN
Using the Johnson & Johnson vaccine as a booster for people initially immunized with the Pfizer/BioNTech vaccine produces a strong immune response and may do more to elicit protection against severe disease, researchers reported Sunday.
Their small study of 65 volunteers who all initially got two doses of Pfizer/BioNTech's vaccine showed that using the J&J Janssen vaccine as a booster produced a slower but more sustained antibody response against the original strain of the virus, as well as the Delta and Beta variants, they said.

Defense Secretary Pete Hegseth risked compromising sensitive military information that could have endangered US troops through his use of Signal to discuss attack plans, a Pentagon watchdog said in an unclassified report released Thursday. It also details how Hegseth declined to cooperate with the probe.

Two top House lawmakers emerged divided along party lines after a private briefing with the military official who oversaw September’s attack on an alleged drug vessel that included a so-called double-tap strike that killed surviving crew members, with a top Democrat calling video of the incident that was shared as part of the briefing “one of the most troubling things” he has seen as a lawmaker.

Authorities in Colombia are dealing with increasingly sophisticated criminals, who use advanced tech to produce and conceal the drugs they hope to export around the world. But police and the military are fighting back, using AI to flag suspicious passengers, cargo and mail - alongside more conventional air and sea patrols. CNN’s Isa Soares gets an inside look at Bogotá’s war on drugs.










