China or US delayed Covid-19 response?

Many western media and news outlets are portraying China as having maliciously delayed informing the world about the virus and being responsible for the level of the deaths throughout the world, particularly in the United States.  Better than judging is to work toward improving the situation in every way possible.  But for those who wish to judge, here are facts and perspectives for consideration from the World Health Organization (WHO), China-posted timelines, and US media timelines and other documentations.

Timeline