To limit the spread of severe acute respiratory syndrome coronavirus 2, the government of China has been monitoring infected travelers and minimizing cold-chain contamination. However, other factors might contribute to recurring outbreaks. We analyze the role of undocumented migrants as potential transmitters of severe acute respiratory syndrome coronavirus 2 in China.
Keywords: 2019 novel coronavirus disease; COVID-19; China; SARS-CoV-2; Yunnan Province; borders; coronavirus disease; coronaviruses; migrants; migration; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.