evidence: GENEVA (AP) — The World Health Organization and its partners said they hope to provide Africa with about 30 percent of the COVID-19 vaccines the continent needs by February, badly missing the 60 percent vaccination coverage goal that African leaders had once hoped for this year. At a press briefing Tuesday, WHO director-general Tedros Adhanom Ghebreyesus called the massive disparity in vaccination rates between rich and poor countries a "solvable problem" and called again for pharmaceutical companies to prioritize the U.N.-backed initiative known as COVAX, which is designed to share vaccines globally. But drugmakers — including Pfizer-BioNTech and Moderna — have shown no indications they are eager to switch their current tactics, which involve appealing to rich countries and their regulators to authorize booster shots. Tedros called last week for a "moratorium" on the use of boosters in healthy populations until the end of the year. Countries including Israel, France and Germany have already started dispensing third doses to certain people; the U.K. announced plans on Tuesday to offer boosters to anyone over 50 as well as younger people who might be more vulnerable to COVID-19.