5 Conclusion
A higher proportion of bacterial co-infection is detected in comparison
with viral co-infection among COVID-19 patients in Qingdao, China. Over
70% of neutrophils proportion, fever and chest tightness are
independent factors associated with specific co-infection in SARS-CoV-2
infection. Additionally, different types of co-infection could variously
result in a promoted viral shedding of COVID-19.