Thailand:Avian Influenza surveillance in human(As at November 13, 2005)

I. Avian Influenza in human situation 2005

Since January 1, 2005 to November 13, 2005, the Bureau of Epidemiology has received reports of influenza or pneumonia cases in Avian Influenza Surveillance Network from the Provincial Health Offices and Disease Prevention and Control Regional Offices. The investigation and analysis were summarized as follows:

Cumulative number of patients under surveillance are 1,969 cases; 74 provinces. Today reports are 26 cases; Nine cases from Bangkok metropolis, 5 from Ubonratchathani, 3 from Suphanburi, 2 each from Nakhonpathom and Nakhonsawan, 1 each from Singburi, Trat, Chiangrai, Sukhothai, and Karasin.

Confirmed human case of avian influenza = 4;
2 cases from Kanchanaburi with one death case,
1 from Nonthaburi/Bangkok Metropolis,
and 1 from Bangkok Metropolis, now hospitalization and rocovering.

There is no suspect cases reported.

Conclusion:

· In 2005, there are 4 confirmed human cases of avian influenza, with 1 death case.

· No patient from man-to-man transmission reported.

II. Avian Influenza International Situation, www.who.int

WHO report in brief: Since 26 December 2004, to 9 November 2005, there had been 125 H5N1 confirmed reported cases, with 64 deaths in 4 countries; Vietnam = 92, with 42 deaths; Four confirmed dead cases from Cambodia; 20 cases with 13 deaths in Thailand; and 9 cases with 5 deaths from Indonesia. (Table 1)

Table 1 : Details of confirmed H5N1 cases from WHO reports.

Duration	Indonesia		Cambodia		Thailand		Vietnamm		TOTAL
	Case	Dead	Case	Dead	Case	Dead	Case	Dead	Case	Dead
26 December - 10 March 2004	0	0	0	0	12	8	23	16	35	24
19 July - 8 October 2004	0	0	0	0	5	4	4	4	9	8
16 December 2004 - 9 November 2005	9	5	4	4	3	1	65	22	80	32
Summary	9	5	4	4	20	13	92	42	125	64

III. Domestic Avian Influenza in poultry situation

Avian influenza in poultry situation on the Department of Livestock Development web site (www.dld.go.th); since October 1 to November 13, 2005; 5 provinces, 11 tambons; Suphanburi (5 tambons), Kanchanaburi (2 tambons), Karasin (2 tambons), Angthong (1 tambon), and Nonthaburi (1 tambon). The areas waiting for laboratory result are 50 provinces; 465 tambons.

*Patient definition:

Suspected : Individual who has body temperature 38°C and one of these symptoms; muscle pain, cough, breathing difficulty, or shortness of breath, or the physician suspicious of pneumonia or influenza plus history of direct contacting sick or dead poultry within the last 7 days or unusual dead of poultry in the village within the last 14 days,
Probable : suspected case with preliminary laboratory result of influenza A infection but strain not known either human or avian influenza yet or respiratory failure or dead,
Confirmed : suspected case with final laboratory result indicated influenza A (H5) of which is avian strain by PCR or by virus culture,
Excluded : any patient who is not compatible with the aforementioned definition or laboratory result proved to be other causes.
Being under investigation : any patient, whose additional data or information either clinical or contact history in risk area are needed before any conclusion could be made.