What's wrong with white blood cells?

A high number of white blood cells in a child generally indicates a possible bacterial infection, taking into account the percentage of neutrophils and C-reactive protein in the child. High white blood cells, high neutrophils, and high C-reactive protein indicate bacterial infection. In addition, there are diseases such as infectious mononucleosis, where white blood cells are high but the proportion of lymphocytes is increased, especially if degenerative lymphocytes are seen, this is not a bacterial infection, but a viral infection. To combine the child's clinical situation, such as fever, tonsil exudation, neck lymph node enlargement and hepatosplenomegaly to consider comprehensively. Therefore, clinically speaking, high white blood cells, high neutrophils, is a bacterial infection, but must be combined with the child's clinical manifestations and other test results to consider comprehensively, when necessary, may need to do blood slides.