<Tr> <Th> Complications </Th> <Td> Glomerulonephritis, rheumatic heart disease, arthritis </Td> </Tr> <Tr> <Th> Usual onset </Th> <Td> 5--15 years old </Td> </Tr> <Tr> <Th> Causes </Th> <Td> Strep throat, streptococcal skin infections </Td> </Tr> <Tr> <Th> Diagnostic method </Th> <Td> Throat culture </Td> </Tr>

Where is scarlet fever most likely to be found in the world