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"HCoV-OC43." Fullformexpand.com, https://www.fullformexpand.com/hcov-oc43/845595. Accessed 24 Nov. 2025.
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HCoV-OC43. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/hcov-oc43/845595 (Accessed: 24 November 2025).