Table 5.

Detection of botulinum toxin in sera of infant botulism according to the time between the symptom onset and serum sampling.

Country	Year	Patient Age at the Onset of Symptoms m, months; d, days	Days from Symptom Onset to Serum Sampling	BoNT in Serum	C. botulinum in Feces	References
Australia	1981	4 m	4	neg	C. botulinum B	[91]
Australia	1982	7 d	3	A	C. botulinum A	[92]
			10	A	C. botulinum A
			16	neg	C. botulinum A
Japan	1986	79 d	22	neg	C. botulinum A	[93]
	1987	40 d	7	A	C. botulinum A
			24	A	C. botulinum A
			26	A	C. botulinum A
			27	A	C. botulinum A
			46	neg	C. botulinum A
UK	2007	8 m	15	A	C. botulinum A	[113]
UK	2001	5 m	10	neg	C. botulinum B	[98]
USA	2007	9 d	5	neg	C. botulinum E	[100]
Denmark	2008	4.5 m	14	BoNT 1		[101]
Finland	2010	3 m	3	A	C. botulinum A	[103]
			15	neg	C. botulinum A
Denmark	2013	5 m	4	A	C. botulinum A	[110]
France	2013	2 m	28	neg	C. botulinum A	[107]
			48	neg	C. botulinum A
			63	neg	C. botulinum A
Argentina	2014	4 m	3	A	C. botulinum A	[111]

¹ Botulinum toxin type not identified, neg, negative.