<prompt> Serious infections can occur when absolute neutrophil count decreases to?Less than 500mLLess than 800mLLess than 1000mLLess than 1500mL  <response>: a. Less than 500mLRef: Nelsons 20e p 1048, Ghai 8e p 357Serious infections are most likely when the neutrophil count falls below 500 per mm3. 