
Recurrent COVID infections tied to higher odds of back problems, Canadian study finds
A Canadian study of 8,809 adults (Apr 2022–Jun 2023) found that people who had COVID twice had 76% higher odds of a new medical diagnosis and nearly four times the odds of a new back problem; even one infection raised odds by about 63%, and symptoms lasting three months or more were linked to more than a threefold increase. The researchers note possible reverse causation (long-lasting symptoms prompting medical visits) and higher risk among older adults, smokers, those with obesity, disability, or existing conditions, and those not fully vaccinated before their first infection. They caution these are relative odds, not absolute guarantees, and recommend up-to-date vaccination and medical consultation for persistent symptoms.













