Can you give me history on scarlet fever?

Here is something I gto off wikipedia

This disease was known before the twentieth century as scarlatina (from the Italian scarlattina). Since the middle of the twentieth century the disease has, for reasons which are not understood, become much milder in its effects, and the usage of the name scarlatina has now replaced the term "scarlet fever" in some areas.

Many novels depicting life before the nineteenth century (see Scarlet fever in popular culture below) describe scarlet fever as an acute disease being followed by many months spent in convalescence. The convalescence was probably due to complications with rheumatic fever or even due to the treatments tried. Prior to an understanding of how streptococcus was spread and modern medicine, it was also not uncommon to destroy or burn the personal effects of a person afflicted with scarlet fever to prevent transmission to other people.

This disease was known before the twentieth century as scarlatina (from the Italian scarlattina). Since the middle of the twentieth century the disease has, for reasons which are not understood, become much milder in its effects, and the usage of the name scarlatina has now replaced the term "scarlet fever" in some areas.

Many novels depicting life before the nineteenth century (see Scarlet fever in popular culture below) describe scarlet fever as an acute disease being followed by many months spent in convalescence. The convalescence was probably due to complications with rheumatic fever or even due to the treatments tried. Prior to an understanding of how streptococcus was spread and modern medicine, it was also not uncommon to destroy or burn the personal effects of a person afflicted with scarlet fever to prevent transmission to other people.

I got this off of wikipedia