Holes in reporting of breakthrough Covid cases hamper CDC response The agency originally tried to track all infections in vaccinated people, from mild to severe. But in May it decided to focus on the most severe cases. Erin Banco POLITICO

The Centers for Disease Control and Prevention is using outdated and unreliable data on coronavirus breakthrough infections to help make major decisions, such as who gets booster shots, according to three officials with direct knowledge of the situation.

'Hell no': Some police officers and their unions oppose vaccination mandates New York City Police Commissioner Dermot Shea said that he is "100 percent" behind a vaccination requirement and that a mandate should come from the state or federal levels. NBC News

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Police unions in Tulsa, Oklahoma; Seattle; and Syracuse, New York, have pushed back against vaccination requirements, as has the union representing state police in Massachusetts.

A new study found half of Covid patients had lingering symptoms one year later.

One year after becoming ill with the coronavirus, nearly half of patients in a large new study were still experiencing at least one lingering health symptom, adding to evidence that recovery from Covid-19 can be arduous and that the multifaceted condition known as “long Covid” can last for months.

The study, published Thursday in the journal The Lancet, is believed to be the largest to date in which patients were evaluated one year after being hospitalized for Covid. It involved 1,276 patients admitted to Jin Yin-tan Hospital in Wuhan, China, who were discharged between Jan. 7 and May 29, 2020.

WHO begins shipping Chinese vaccines despite some misgivings By Francesco Guarascio, Alexander Winning and Stanley Widianto Francesco Guarascio, Alexander Winning, Stanley Widianto U.S.

BRUSSELS/JOHANNESBURG/JAKARTA (Reuters) -The World Health Organization’s pandemic programme plans to ship 100 million doses of the Sinovac and Sinopharm COVID-19 shots by the end of next month, mostly to Africa and Asia, in its first delivery of Chinese vaccines, a WHO document shows.

Study: Patients, not staff, source of most hospital COVID spread Also, 21% of patients caused 80% of infections, UK researchers find. CIDRAP

Most hospital patients diagnosed as having COVID-19 contracted the virus from other patients rather than healthcare workers (HCWs), with 21% of patients causing 80% of cases, finds a UK study today in eLife.  ...