“…According to Bunim, Kuttner, Baldwin and McEwen (1952), the rebound usually subsides within 20 days. Massell (1950), writing about rebounds in salicylatetreated cases, said that the fever subsided in three or four days. Dorfman, Smull, Bergenstal, Howard, Muller, Oleson and Senz (1951) found the intensity and duration of the rebound to be highly variable.…”