Usual incubation period (range)

Bacillus cereus (short) : 0.5–6 hours
Bacillus cereus (long): 6–24 hours
Campylobacter: 2–5 days (1–10 days)
Vibrio cholerae O1 or O139: 2–3 days (2 hours–5 days)
Clostridium botulinum: 12–36 hours
Clostridium perfringens: 10–12 hours (6–24 hours)
Cryptosporidium: 7 days (1–12 days)
Giardia: 7–10 days (3–25 days)
Norovirus: 24–48 hours (10–72 hours)
Rotavirus: 24–74 hours
Salmonella: 12–36 hours (6–72 hours)
Salmonella Paratyphi: 1–10 days
Salmonella Typhi: 1–3 weeks (3 days–3 months)
Shigella: 1–3 days (12 hours–1 week)
Staphylococcus aureus: 2–4 hours (30 minutes–8 hours)
Vibrio parahaemolyticus: 12–24 hours (4–30 hours)
Yersinia: 3–7 days (<10 days)