On 31 Dec, 2019 China alerts WHO of several pneumonia cases. It was actually COVID-19 taking roots. Later Jan 7, 2020 France confirmed its first case, but by then Wuhan city had already been reeling under the coronavirus.
Jupiter is transiting Sagittarius and is very strong at the tattva level. But Jupiter was conjoined Saturn, Sun and Ketu and aspected by Rāhu. That’s 80% malefic hit on Jupiter confirming the activation of curse of Guru.