Alarm bells ring in Japan as experts warn of fast-spreading new Covid variant KP. 3

The KP. 3 variant is spreading rapidly, even among those who are vaccinated or have recovered from previous infections, according to Kazuhiro Tateda, president of the Japan Association of Infectious Diseases.

“It is, unfortunately, the nature of the virus to become more resilient and resistant each time it changes into a different form,” Tateda told This Week in Asia. “People lose their immunity quite quickly after being vaccinated, so they have little or no resistance.”

Tateda, who sits on Japan’s advisory panel formed at the start of the pandemic, said the coming weeks will be critical as authorities monitor the variant’s spread and impact.

While hospitals have reported a sharp uptick in Covid-19 admissions, Tateda said he is “relieved that not many of these cases are severe”. Typical symptoms of the KP. 3 variant include high fever, sore throat, loss of smell and taste, headaches, and fatigue.

According to the health ministry, medical facilities across Japan logged a 1.39-fold – or 39 per cent – increase in infections from July 1 to 7, compared to the previous week.