Clump

At the end of the 19th century a strange and unexplained medical phenomenon starts to occur - people being to 'clump' together. What starts out as two individuals conjoined at the skin soon snowballs into groups of three, four, and upwards. How large can these clumps grow? And when, if at all, will the clumping stop?

Keywords: science fiction, fantasy, short story, historical, 19th century, history, dystopia, society, cities, illness, medicine, surgery, conjoined twins