Chan started emailing authors and journals to get the raw data she needed to more fully analyze what they had done. Making such data available is usually a condition of publication, but it can still be hard to obtain. After what she calls months of stonewalling, Chan finally lost her cool and blasted an accusation out from her browser. “I need the scientists + editors who are directly or indirectly covering up severe research integrity issues surrounding some of the key SARS-2-like viruses to stop and think for a bit,” she posted to Twitter. “If your actions obscure SARS2 origins, you’re playing a hand in the death of millions of people.”
Eddie Holmes, a prominent Australian virologist and coauthor of one of those papers (as well as “Proximal Origins”), called the tweet “one of most despicable things I read on the origins issue.” He felt accused, but he wondered what he was being accused of, since his paper had correctly accounted for its pangolin data sources. Holmes then circulated an intricate time line prepared by Chan of the publication dates and past connections between the authors. The chart’s dense web of arrows and connections bore an unmistakable resemblance to an obsessive’s cork board covered with red string and thumbtacks.
That’s a reasonable theory: other bat coronaviruses have jumped to humans the same way. In fact, it was the origin of SARS, a similar coronavirus that panicked the world in 2003 when it spread out of southern China and sickened 8,000 people. With SARS, researchers tested caged market animals and quickly found a nearly identical virus in Himalayan palm civet cats and raccoon dogs, which are also eaten locally.
This time, though, the intermediate-host hypothesis has one big problem. More than a year after covid-19 began, no food animal has been identified as a reservoir for the pandemic virus. That’s despite efforts by China to test tens of thousands of animals, including pigs, goats, and geese, according to Liang Wannian, who leads the Chinese side of the research team. No one has found a “direct progenitor” of the virus, he says, and therefore the pandemic “remains an unsolved mystery.”
A leaked scientific report jointly prepared by Israel’s health ministry and Pfizer claims that the company’s covid-19 vaccine is stopping nine out of 10 infections and the country could approach herd immunity by next month.
The study, based on the health records of hundreds of thousands of Israelis, finds that the vaccine may sharply curtail transmission of the coronavirus. “High vaccine uptake can meaningfully stem the pandemic and offers hope for eventual control of the pandemic as vaccination programs ramp up across the rest of the world,” according to the authors.
The nationwide study was described by the Israeli news website Ynet on Thursday, and a copy was obtained by MIT Technology Review.