that's going to help us track him down. 
Social distancing can slow the rate of spread of the virus by up to a third. So presumably other actions like contact tracing, hand sanitising, mask wearing, and travel reduction can all have an effect too. Every little helps.
This. And just in case you missed, it, lifted from the bbc article here :
By late December, medical staff in Wuhan were beginning to notice unusual symptoms of viral pneumonia, with a cluster linked to the market trading in illegal wildlife. On 30 December, Dr Li Wenliang, an ophthalmologist working in Wuhan's Central Hospital, posted his concerns in a private medical chat group, advising colleagues to take measures to protect themselves.....
...But despite the multiplying cases and the concerns among medics that human-to-human transmission was taking place, the authorities did little to protect the public. Doctors were already setting up quarantine rooms and anticipating extra admissions when Wuhan held its important annual political gathering, the city's People's Congress.
In their speeches, the Communist Party leaders made no mention of the virus. China's National Health Commission continued to report that the number of infections was limited and that there was no clear evidence that the disease could spread between humans.
And on 18 January the Wuhan authorities allowed a massive community banquet to take place, involving more than 40,000 families. The aim was to set a record for the most dishes served at an event. Two days later, China finally confirmed that human-to-human transmission was indeed taking place.
Most remarkable of all perhaps, the following day, Wuhan held a Lunar New Year dance performance, attended by senior officials from across the surrounding province of Hubei. A state media report of the event, since hurriedly deleted but captured here, says the performers, some with runny noses and feeling unwell, "overcame the fear of pneumonia... winning praise from the leaders".
By the time the national authorities had woken up to the impending disaster, and closed the city down on 23 January, it was too late - the epidemic was out of control. Before Wuhan's transport links were cut, an estimated five million people had left the city for the Lunar New Year break, travelling across China and the world.