AstraZeneca denied the company’s Covid-19 vaccine is not very effective for people over 65 years old, after German media reports said officials fear the vaccine may not be approved in the European Union for use in the elderly.

Moderna Inc.’s coronavirus vaccine mRNA-1273 became the second to receive emergency use authorization (EUA) from the U.S. Food and Drug Administration, welcome news to a nation with a staggering Covid-19 death toll of more than 307,000 lives lost.

The United States authorized the use of Pfizer Inc’s Covid-19 vaccine on Dec. 11, with the first inoculations expected within days, marking a turning point in a country where the pandemic has killed more than 295,000 people.

A roundup of some of the latest scientific studies on the novel coronavirus includes research on whether a childhood vaccine may help prevent severe Covid-19 and whether cigarette smoke increases cell vulnerability to Covid-19.

GlaxoSmithKline will move the company’s experimental vaccine against the respiratory syncytial virus (RSV), a cause of pneumonia in toddlers and the elderly, into the final stage of testing after experiencing encouraging mid-stage trial results.

A lower supply of a certain type of immune cell in older people that is critical to fighting foreign invaders may help explain their vulnerability to severe Covid-19, scientists say. An antiseptic nasal spray containing povidone-iodine may help curb transmission of the new coronavirus, preliminary research suggests.

New York state filed civil charges accusing Johnson & Johnson of insurance fraud for downplaying the risks of opioid painkillers, including to doctors and elderly patients.

Healthcare providers – including CVS Health Corp. – are kicking off flu vaccinations early, ordering extra shots and aiming to add tests that check for both the annual flu and COVID-19, pharmacy executives and experts told Reuters.

The death toll from COVID-19 surpassed half a million people, according to a Reuters tally, a grim milestone for the global pandemic that seems to be resurgent in some countries even as other regions are still grappling with the first wave.

Novoheart and AstraZeneca agreed on a collaboration to develop the world’s first human-specific in vitro, functional model of heart failure with preserved ejection fraction (HFpEF), a common condition especially among the elderly and in women.