This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Pediatrics
6th day disease is? 
Select and explain. 
A. Erythema Infectiosum, B. Exanthema subitum, C. Erythema marginatum, D. Erythema nodosum
B: Exanthema subitum
Answer: B: Exanthema subitum 
Explanation: Terminology Other names for the disease Etiology First disease Rubeola/ measles Measles virus Second disease Scarlet fever Streptococcus pyogenes Third disease Rubella/German measles/3- day measles Rubella virus Fouh disease Staphylococcal scalded skin syndrome/Ritter's disease Staphylococcus aureus Fifth diseases Erythema infectiosum Parvovirus B19 Sixth disease Exanthem subitum/ Roseola infantum Human Herpes Virus 6 or 7