Duro, Inês, Maria Conceição Manso, Cristina Couto, and Mary Duro. “Anti-Spike IgG Against COVID-19 Three Months After the End of the Pandemic in Northeast of Portugal”. Scientific Letters 1, no. 1 (November 14, 2024): 14. Accessed November 21, 2024. https://publicacoes.cespu.pt/index.php/sl/article/view/269.