<prompt> 24 hours after fever, maculopapular rash and erythema appears on the face of infant. This organism can also causeALLCMLPure red cell aplasiaHairy cell leukemia  <response>: Its caused by Parvo B19 virus, and it causes the following diseasesErythema infectiosumFifth disease.Slapped cheek appearances.Arthropathy.Transient Aplastic crisis.Hydrops fetalis most sensitive period 2nd trimesterMyocarditis.PPGSSPapular - Purpuric Gloves Stock Syndrome. Transient Aplastic CrisisThe transient arrest of erythropoiesis and absolute reticulocytopenia.RBC aplasia or transient aplastic crisis in patients with chronic hemolytic conditions, including:Sickle cell disease.Thalassemia.Hereditary spherocytosis.Pyruvate kinase deficiency.In contrast to children with erythema infectiosum only, patients with aplastic crisis are ill with fever, malaise, and lethargy and have signs and symptoms of profound anemia, including pallor, tachycardia and tachypnea.The incubation period tor transient aplastic crisis is shorter than that for erythema infectiosum because the crisis occurs coincident with the viremia.Children with sickle cell disease may also have a concurrent vasoocclusive pain crisis. 