>Others theorize a benefit stems from the push to get the flu shot and the lack of international travel.
These same "experts" are retarded idiots, who didn't do research and are inventing silly theories, that make no sense.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2130424/
An outbreak of common colds at an Antarctic base after seventeen weeks of complete isolation
Six of 12 men wintering at an isolated Antarctic base sequentially developed symptoms and signs of a common cold after17weeks of complete isolation. Examination of specimens taken from the men in relation to the outbreak has not revealed a causative agent.