| | The head of the World Health Organization said on Tuesday China's zero-tolerance COVID-19 policy is not sustainable given what is now known of the virus, in rare public comments by the U.N. agency on a government's handling of the pandemic. | | | Pfizer Inc said on Tuesday it will pay $11.6 billion to buy Biohaven Pharmaceutical Holding Co , making a big bet on its ability to boost sales of the top-selling pill in a new class of migraine drugs. | | | U.S. retailers including Target Corp , CVS Health Corp and Walgreens Boots Alliance said on Tuesday they have limited purchases of infant formula due to a supply shortage. | | | The World Health Organization's European chief said on Tuesday that at least 3,000 people had died in Ukraine since Russia's invasion in February because they had been unable to access treatments for chronic diseases. | | | The head of the World Health Organization said on Tuesday China's zero-tolerance COVID-19 policy is not sustainable given what is known of the disease, in rare public comments by the U.N. agency on a government's handling of the virus. | | | Health officials in some countries are questioning the merits of repeated, mass testing when it comes to containing infections, particularly considering the billions it costs. | | | General Electric's healthcare unit said on Tuesday it had increased output of dye used for medical scans and tests at its factory in Ireland and shipped products by air to help combat shortages caused by the suspension of its Shanghai factory. | | | Vaccine developer BioNTech completed a Phase II clinical trial of its COVID-19 vaccine in China in January but has yet to release its results, a registry of such trials showed on Tuesday. | | | Novavax Inc's shares plunged nearly 20% in premarket trading on Tuesday due to uncertainty over global demand for the company's COVID-19 vaccine following a slow start to deliveries. | | | Members of the World Health Organization's European region passed a resolution on Tuesday that could result in the closure of Russia's regional office and the suspension of meetings in the country in response to its invasion of Ukraine. | | | | |