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Covid-19 Pandemic Timeline Fast Facts Read CNN's Fast Facts about the coronavirus outbreak, declared a pandemic by the World Health Organization. CNN Editorial Research CNN

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(CNN) Here's a look at the coronavirus outbreak, declared a pandemic by the World Health Organization. The coronavirus, called Covid-19 by WHO, originated in China and is the cousin of the SARS virus.

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WHO: New COVID cases, deaths keep falling nearly everywhere GENEVA (AP) — The number of new coronavirus cases and deaths reported globally continued to fall nearly everywhere in the world in what the World Health Organization described as a “welcome decline” at a media briefing on Wednesday. AP NEWS

... WHO said COVID-19 infections dropped everywhere in the world while deaths decreased everywhere except for Southeast Asia, where they climbed by 15% and in the Western Pacific, where they rose by 3%. 

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Study explores differences in the efficiency of COVID-19 vaccine boosters In a new study, researchers predicted the efficacy of coronavirus disease 2019 (COVID-19) vaccine boosters. News-Medical.net

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The study findings indicated that variant-modified booster vaccines could result in significantly higher neutralization titers against prevalent and ancestral SARS-CoV-2 variants compared to ancestral-based boosters.

New Covid Variant BA.4.6 Outcompeting Dominant BA.5 Across Swath Of U.S. For First Time CDC data indicates a new Omicron variant dubbed BA.4.6 may be able to outcompete the now-dominant BA.5 strain across the United States. Tom Tapp Deadline

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While BA.4.6 has been in the U.S. since at least May, it remained below 2% of new cases sequenced until July, when it gradually began to rise, even as BA.5 continued to do the same. As of this week’s CDC reporting, it currently stands at 7.5%. But the real wrinkle comes when the variant proportions are broken out regionally.

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