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30,605 articles from Guardian Unlimited Science

We have no idea if the Russian Covid vaccine is safe or effective | Gideon Meyerowitz-Katz

The only discernible difference between Russia’s vaccine and others is that this one has skipped most of the testing phases • Russia’s coronavirus vaccine: will it work, and is it safe?Throughout the Covid-19 pandemic, there’s been one hope that we’ve all relied on. We’re all waiting, with baited breath, for the day that scientists announce a successful coronavirus vaccine, because...

'Could I feel what they were doing? Yes': Rob Delaney on the pain and pleasure of his vasectomy

The actor and comedian decided it was time to have the procedure after he and his wife had had four children. Here he writes candidly about the experience, and why it was the kindest cutI got a vasectomy a few months ago. A vasectomy is when they cut and tie off the vas deferens, which are these little tubes in your ball sack (scrotum) so that there’s no sperm (sperm) in your jizz (semen) when...

Global report: New Zealand begins mass testing as Australia records deadliest day

New Zealand to conduct ‘tens of thousands’ of tests; 21 deaths recorded in Australian state of Victoria; US health secretary sceptical of Russia vaccineCoronavirus – latest updatesSee all our coronavirus coverageAustralia suffered its deadliest day of the pandemic so far, with 21 deaths in the state of Victoria, as authorities in New Zealand’s largest city prepared to conduct “tens of...

Coronavirus live news: Lebanon sees record cases after blast; New Zealand's biggest city heads into lockdown

WHO warns displacement of people in Beirut risks accelerating Covid-19 spread; four new cases in Auckland, New Zealand; Australia suffers deadliest day. Follow the latest updatesRussia approves vaccine despite testing concernsFrench and Dutch on alert over rise in casesLost on the frontline: the 900 US health workers who have diedSee all our coronavirus coverage 3.59am BST Nibarchana Oli has tried...