From what I can tell, this is largely because the testing is not in place in most parts of the world where this virus is likely spreading. Also, we largely do

From what I can tell, this is largely because the testing is not in place in most parts of the world where this virus is likely spreading. Also, we largely do not have the capacity to test people, even if we had the infrastructure in place, because most people do not present with severe symptoms. In the US, it is increasingly obvious that there are more cases than are being tested/reported. More and more healthcare professionals are reporting individuals with severe flu symptoms either not being tested for anything, or testing negative for Influenza. Proper quarantine is not being implemented to or from the US, so the subset of people who are infected but not confirmed can still travel and spread this disease.