I think the word that you are thinking of xenophobic.
China is a country, not a race. Many races make up the billions of people in China.
If it was called the US flu, which race would that be?
It can be considered offensive even though historically flus have been named for the country of origin, Spanish flu, Hong Kong flu and the Plague of Justinian named after an actual person. There are also the Russian, Italian, Mexican, Naples plagues that were more localized. Patient Zero for Covid was from China, specifically Wuhan.
Offensive, yes, quite probably but not without precedent. Racist? Nope, but most definitely xenophobic in the woke age of the 2020's...
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