Pfizer says that 3 doses of its existing COVID-19 vaccine is effective against the omicron variant – great news for 25% of Americans who are fully vaccinated and boosted, good news for the 60% of Americans who are fully vaccinated, and definitely not so good for the 40% of Americans or the 93.7% of people in low-income countries who are not vaccinated.
Futures are up very modestly on the news.
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