Wuhan has 11M people in the province and 8500km2 area = 1300 people / km2
Queensland has 5M people over 1.8M km2 = 3 people / km2 (as representative of how density is diff)
Hubei is centrally located in China : China has 1.4B people, 9.6M km2 (144 people / km2)
COVID-2019 has Ro of ~3 (each person infects 3 ppl)
Mortality rate is ~2% compared with nomral Flu of 0.05% (40x more)
Let's assume numbers (within China) may be being downplayed, so numbers are probably higher
11M people can't be tested fully in 3 weeks, surely, so numbers are probably higher
Incubation period is ~14 days
First WHO sit report was 21st Jan, just over 21 days ago
10K people infected with common flu will infect 13K (Ro = 1.3) and 5 people will die at 0.05% mortality rate 10K people infected with COVID-19 will infect 23K (Ro = 2.3) and 200 people will die at 2% mortality rate Plus China has more travel in/out than say the Congo.
