The term childhood disease refers to disease that is contracted or becomes symptomatic before the age of 18 or 21 years old. Many of these diseases can also be contracted by adults. Some childhood diseases include: Diseases of neonates and children younger than five years Candida albicans infection Candida parapsilosis infection Cytomegalovirus infection diphtheria human coronavirus infection respiratory distress syndrome measles meconium aspiration syndrome metapneumovirus (hMPV) infection Necrotizing enterocolitis Gonorrhea infection of the newborn parainfluenza (PIV) infection pertussis poliomyelitis prenatal Listeria Group B streptoccus infection Tay–Sachs disease tetanus Ureaplasma urealyticum infection respiratory Syncytial Virus infection rhinovirus; common cold Diseases of older children Common cold AIDS Anemia Asthma Bronchiolitis Cancer Candidiasis ("Thrush") Chagas disease Chickenpox Croup Cystic fibrosis Cytomegalovirus (the virus most frequently transmitted before birth) Dental caries Type 1 diabetes Diphtheria Duchenne muscular dystrophy Fifth disease Congenital Heart Disease Infectious mononucleosis Influenza Intussusception (medical disorder) Juvenile idiopathic arthritis Leukemia Measles Meningitis Molluscum contagiosum Mumps Nephrotic syndrome Osgood-Schlatter disease Osteogenesis Imperfecta (OI) Pneumonia Polio Rheumatic fever Rickets Roseola Rubella Sever's disease Tetanus Tuberculosis Volvulus Whooping cough Hepatitis A Scarlet fever (Scarletina) Lyme disease Xerophthalmia Lists of diseases