<prompt> An 8-month-old girl suddenly developed a high fever 103degF. Her pediatrician examined her and found no signs of upper respiratory tract infection, meningitis, or encephalitis. Two days later, the girls fever reached 105degF and she suffered a febrile seizure. By the time the child was brought to the pediatricians office, her temperature had dropped. The doctor noted a generalized papular rash. What was the doctors most likely diagnosis for this child?Erythema infectiosum caused by parvovirus B19Hand-foot-and-mouth disease caused by Coxsackievirus AMeasles caused by MorbillivirusRoseola infantum caused by human herpes virus 6  <response>: Roseola infantum caused by human herpes virus 6 d leads to seizures in 15 of symptomatic infants. In healthy infants, the infection is asymptomatic or follows the course described in the vignette. In immunocompromised children, the abrupt onset includes CNS and other organ system involvement. Following infection, the virus remains latent in lymphocytes and monocytes. Infection in adults or reactivation in adulthood may produce a mononucleosis-like syndrome with lymphadenopathy and hepatitis. In immunocompromised patients such as bone marrow, kidney, and liver transplant patients, much more serious infectionsreactivations occur that may lead to organ rejection and death. Erythema infectiosum a, hand-food-and-mouth disease b, measles c, and rubella d caused by the viruses indicated in the choices each present differently: slapped cheek reticular rash 7 to 10 days following a nonspecific prodrome; vesicles appearing on the hands, and disseminated maculopapular rashes beginning on the neck, respectively. 