1973 paper about an outbreak of colds on researchers in a British Antarctic base in 1969. What's fascinating is that the outbreak took place after 17 WEEKS OF COMPLETE ISOLATION.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2130424/?page=10
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2130424/?page=10