Figures and tables.
Figure 1. PRISMA flow chart.
Table 1. General characteristics of included studies.
Figure 2. Meta-analysis of illness severity.
Figure 3. Meta-analysis of OR. (<1y and
severe/critical disease and >10y severe/critical disease).
Figure 4 . Meta-analysis of clinical manifestations. (Fever,
cough, diarrhea and vomit).