The virus crossed into humans in China (just like the "Spanish" flu crossed from pigs to humans in Kansas, and MERS from camels to humans in the middle East). I am skeptical about case numbers in China, but it's ridiculous to say it's only affecting western Europe and N America. It's all over SE Asia at various levels, south Asia, west Asia (Iran had high impact), Africa, and S America. That's what highly infectious viruses do - they spread globally. There is much that needs to be learned about the susceptibility in different global regions, based on immunity and other factors that might amplify or dampen the impact.
But this sort of pandemic has been anticipated and predicted for some time by virologists and epidemiologists. The influenza epidemic of 1918 showed what a viral pandemic could do with a high lethality and no vaccine. SARS and MERS gave more recent warnings about dangerous coronaviruses that could cross over to humans from animals. Most governments haven't heeded the warnings, so the global response has been inadequate. China's late disclosures made it worse, as did the lack of an aggressive response by the WHO, Europe and the US.