CRP and infection: Hemogram results obtained through the blood count of the patients, individuals with a single infection had higher levels of urea when compared to patients with co-infection by other respiratory viruses (p < 0.05; Figure 5); however, patients with viral co-infectionshowed elevated levels of platelets, C-reactive protein (CRP), lactate dehydrogenase (LHL) and D-dimer compared to those with single infection (p < 0.05; Figure 5).