As pointed out in a comment by the host of the True Tzaddikim blog here, the virus went public during the week of Parshat Va'era, in which dever (pestilence) plays a significant role.
Rav Avigdor Miller discussed it at length as an epidemic affecting people, not just animals (which you can see HERE).
Furthermore, this virus hit right around the time of a big avodah zarah festival.
There are other things in China too, some of which are purely the fault of the government and some of which most of the people themselves willingly go along with.
(Forced abortion, even not long before birth, for mothers who break the "one-child-only" law, the aborting of female unborn by parents who prefer that their one child be a boy, & which has led to the unnatural ratio of more boys than girls in the country, the lack of compassion treatment toward the poor, the practice in some areas of eating the limb of a living animal, and so on.)
This year also saw the hurricanic destruction of an island in the Bahamas, a place known for its occult practices and rampant zimah, plus drug trafficking and the more horrifying human trafficking. (Holding people against their will is included in the Noachide prohibition against theft, and is a capital crime in halacha.)
There has also been flooding in places around the world known for being steeped in avodah zarah and seriously hefker behavior, plus human rights abuses.
These places are so steeped in immoral ways, the people themselves don't even WANT to change and be better. (For example, a lot of people like avodah zarah & hefker behavior; nowadays especially, many people honestly don't see anything wrong with them.)
We know from our chachamim that these things are a warning to us.
And as Rav Avigdor Miller and so many others have reminded us throughout millennia and in the Torah itself:
Our most important avodah is to serve Hashem B'SIMCHA – with joy.
We just keeping moving forward in embracing our lives of Torah & mitzvot, and we should do everything we can do embrace the mitzvot b'simcha.
Sometimes, "b'simcha" the hardest mitzvah to uphold.
B'ezrat Hashem, we'll all do our best & may Hashem bless us with much success.