Lately, a lot of governments and people in various countries want to put the blame entirely on China. However, the latest studies are coming out and saying that, if they did the same tough measures, which they employed against China, on themselves, they should be ok.
All the latest genetic and epidemiological studies actually tell several important things:
(1) Governments in Europe and the US knew exactly what happened in China and how terrible it was. Thats why their own "quarantining China" policies had been successful. They immediately shut down all travels with China. that's why the initial Chinese strains didn't explode outside of China. So no more excuses and no more "you didn't tell us and we had no idea!" No one was left in the dark! That's why everyone started isolating China.
A good example of this uneven policy would be Taiwan. Taiwan initially had a very tough lockdown policies on anyone coming from China. Because of that, they managed to keep the confirmed cases down to about a total of ~20 cases throughout late January, entire Feb and early March. However, Taiwan has a very soft policy with Europe and the US. That's why their cases also exploded to >300 since the sudden outbreak in Europe and the US in mid March.
(2) Very few infected Chinese "escaped" Wuhan before their lockdown. Many have been accusing China of letting so many infected people escape to all corners of the world before the lockdown. If this happened and no one in Europe and the US did anything to stop the transmission for 2 months (from the lockdown of Wuhan to the later explosion in Europe and the US), the entire world would be filled with virus strains directly coming out of China. However, this is not the case. For example, the outbreak in the US is dominated with strains coming from Italy. If both Chinese strains and the Italian ones had been allowed to propagate uncontrolled in the US, the Chinese strains, being the older strains with more time to mutate and to replicate, should dominate between the two populations if left unchecked. Yet, this is not the case at all. The the direct Chinese strains are almost non-existent. That means very few direct Chinese strains managed to arrive at the US. that means very few Wuhan population escaped.
(3) Many have been questioning the Chinese numbers, mainly the amazingly low case totals in the provinces other than the province of Hubei, where Wuhan is the capital city. Given their assumption that many many people escaped Wuhan before the lockdown and spread out all of China, it would be impossible for China's other provinces to have such low case totals. Hence, fake numbers! Well, we now know very few people escaped Wuhan and caused no damage in other parts of the world, most of which had implemented nothing to control the spread of anything. Given how tough all other Chinese provinces had been screening for Wuhan people and other potentially infected people, it makes perfect sense that China has been able to keep the case total low in other provinces.