While we no longer worry as much about the severity of Covid, there are questions about whether the pandemic has left us more exposed to other serious illnesses. Massachusetts officials reported a rare case of a virus related to smallpox, called monkeypox, on Wednesday. A small number of cases has…

For much of the pandemic, Covid-19 posed the biggest risk to adults — particularly the elderly and those with preexisting medical conditions — with children making up a small subset of the severely affected. But the emergence of the highly transmissible delta variant has increased infections and…

A surge in Covid-19 cases following the emergence of the highly transmissible delta variant has sparked fresh health concerns and raised questions about the safety and pace of reopening, even in places where vaccination rates are high such as the UK Sam Fazeli, a Bloomberg Opinion contributor who…

Vaccines have been game changers in the fight against Covid-19, offering effective protection against even highly contagious and pathogenic strains such as the delta variant. But with many in the world still unvaccinated and cases on the rise – including among the vaccinated – it’s becoming clear…

When it comes to health breakthroughs, Covid-19 vaccines have received the lion’s share of recent attention – and rightly so, as they are key to ending a global pandemic that has killed millions and disrupted the lives of almost everyone on the planet. But there have also been big advancements in…

As nations race to roll out vaccines in the global effort to contain Covid-19 and allow for a return to normal, the rise of dangerous virus variants threatens to prolong the pandemic. In the UK, the spread of the so-called delta variant, first identified in India, has led officials to send military…

The rollout of Covid-19 vaccines developed by AstraZeneca Plc and the University of Oxford and Johnson & Johnson has been marred by rare but serious blood-clotting side effects that resulted in some deaths. Now, scientists in Germany say they have uncovered the cause of the clotting condition and…

The Covid-19 vaccination rollout has gained momentum in many parts of the world, increasing hope — despite hotspots in India and elsewhere — that we have the tools to tame the virus and the pandemic. But even in places such as the US, where mass inoculations have helped bring down infections,…

When it comes to Covid-19 vaccinations, Britain has been a bit of a renegade. At the outset of the global rollout, the UK — in an effort to inoculate as many people as possible as quickly as possible — started its campaign by lengthening the time interval between the first and second shots beyond…

When it comes to managing Covid-19, few countries have a spotless record. This includes the UK, where early mixed messages from Prime Minister Boris Johnson, too-soon reopenings later on and some potentially risky vaccine strategies marred the response. I have been critical, for instance, of…