According to Transport Topics, and magazine which reports on the activities of our shipping ports. The ports of Long Beach and Los Angeles have seen a decline in their shipping volume of about 5% beginning in January. That would correspond with the outbreak of the Coronovirus in China. Transport Topics also notes, that most of the other US Ports are experiencing shipping declines also beginning in January.
But that decline may be just the first stage of this impact. Most container ships take about 60 days, plus or minus, to reach the United States from China. That means that the real slow down in production, which began with the initial outbreak of the Coronavirus at the end of December. That slow down in Chinese production, should hit our shores in a serious way beginning at the end of this month.