Asia's new covid surge - And Nimbus arrives the UK
Thanks to global travel sending people around the planet in a matter of hours, disease spreads remarkably fast in the modern world. We're seeing an ongoing covid surge in Asia at the moment, reminding us that we can't be complacent even through summertime when covid tends to draw back in the northern hemisphere. Let's take a look at what's out there right now.
Singapore and wider Asia experience covid surges
Singapore's Ministry of Health and their Communicable Diseases Agency are both keeping a close eye on a covid surge that kicked off in May, a serious matter even though there's no sign the circulating variants are either more transmittable or cause more serious disease than previous variants.
At the end of April to early May, weekly cases shot up to 14,200, up from 11,100 the week before, with average daily hospitalisations also rising. It isn't unexpected, with waves expected through the year, and the surge could be partly down to falling immunity in the general population. At the moment Omicron LF.7 and NB.1.8.1, both of which have descended from the JN.1 variant used for vaccines at the moment, are the main culprits in Singapore, accounting for more than two-thirds of local cases.
On the bright side neither of the two new variants are thought to be 'of concern'. But new covid fears are emerging as Asia's surge carries on. Cases in India, Thailand and Indonesia are all on the increase, which heightens the risk of new and more dangerous variants emerging. The NB.1.8.1 subvariant has already spread to numerous countries thanks to its powerful ability to bind to human cell receptors, and it may ultimately prove more infectious.
How will the Asian covid surge affect the UK?
We're already seeing warnings from the UK's medical sector about a new covid symptom as the Nimbus variant takes hold here. Apparently anyone with what they're calling a 'razor blade' throat could have picked up this this new, 'highly contagious' covid variant.
Nimbus is a descendant of Omicron and we're already seeing cases here following the original surges in Singapore, China and Hong Kong. Look out for fatigue, a very sore throat, blocked nose and an uncomfortable gut. The extreme sore throat is a new symptom, a sharp, stabbing pain at the back of your throat when you swallow. You might also have a red sore patch in the back of your mouth and swollen glands in your neck as your immune system kicks in. Other than that the symptoms are mostly what you'd expect from covid: a fever, aches and a blocked nose, a continuous cough, high temperature, loss of sense of smell and taste, and feeling sick. Most of the time it's mild but as usual, vulnerable people are more at risk.
There have been 13 UK Nimbus cases confirmed in the UK so far, but experts say there are likely to be a lot more simply because there's not as much testing as there was during the pandemic itself. But UK Health Security Agency data does reveal positive tests have shot up to record levels, already 97% more than we saw in March 2025. And that's why some experts are worried there'll be a surge of the new strain in the UK this summer.
If you're vulnerable, the official recommendation is to get a vaccination. But even if you do, and even if you've already had covid, you can still catch the virus because your immunity fades over time. Plus, covid is known to spread more easily in the hot, humid weather we've been seeing. With covid named as a factor in 300 deaths in England throughout May, this is no time to relax your guard. The UKHSA is keeping a close eye on things.
Elsewhere in the world, according to the WHO, Nimbus is responsible for just under 11% of covid worldwide, compared to 2.5% a month earlier.
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