The overall prevalence results from adding patients who had conjunctivitis at the time of the evaluation and those who reported having conjunctivitis prior to the examination. Prevalence will be presented as a percentage of those with conjunctivitis along with its 95% confidence interval (CI). The distribution of gender, acute pneumonia, and bilateral pneumonia depending on the outcome status (conjunctivitis or not) will be presented as percentages and the differences addressed through the chi-squared test (of the Fisher’s exact test in case the frequencies be low). Differences in prevalence and clinical presentation of conjunctivitis were analyzed by sex. Likewise, the distribution of the quantitative covariates (leucocytes, neutrophils, lymphocytes, C-reactive protein, ferritin, D-dimer, creatinine, and LDH) will be depicted through the median, first, and third quartile, using the Mann-Whitney U test to assess their differences depending on the presence of conjunctivitis and sex.