Russia to test Covid-19 vaccine in form of nasal spray

Russia will test a nasal spray form of its Sputnik V vaccine against Covid-19 among adult volunteers, according to a state document published on Tuesday, as the country struggles to rein in rising numbers of infections and deaths.

Russia was quick to develop and launch its Sputnik vaccine when the coronavirus pandemic struck last year, but take-up has been slow, with many Russians citing distrust of the authorities and fear of new medical products...