"Abnormally, large number of WBCs in the blood are usually an indication of some infection in our body". Comment on the statement.

Whenever a germ or infection invades the body, the immune system receives a signal to synthesize particular antibodies. In response to the quantity of germ-multiplication in the body, white blood cells multiply rapidly which enables it to produce more antibodies thereby stopping the infection on time. Consequently, abnormal numbers of WBCs are an indication of some infection in the body.