Emerging evidence of sand fly fever virus transmission in Sri Lanka

Table 1 Summary of demographic characteristics, clinical manifestations, and laboratory investigation results of patients seropositive for sand fly fever virus immunoglobulin M antibodies

Parameter	Patient 1	Patient 2
Serial number	1445	1450
Age	40-50 years	6-8 years
Clinical features	Fever, headache, retro-orbital pain, joint pain, myalgia, vomiting	Fever, headache, retro-orbital pain, joint pain, vomiting
Total WBC count	4100 cells/μL	4700 cells/μL
Lowest platelet count	160000 cells/μL	142000 cells/μL
Packed cell volume	No increase	No increase
SGPT/SGOT	Mild elevation	Mild elevation

WBC: White blood cell; SGPT: Alanine transaminase; SGOT: Aspartate transaminase.

Table 2 Laboratory test results of the two sand fly fever virus immunoglobulin M-positive cases

Test performed	Case 1 (child, 6-8 years)	Case 2 (adult, 40-50 years)
SFFV IgM antibody	Positive	Positive
Hantavirus IgM antibody	Negative	Negative
Dengue IgM antibody	Negative	Negative
Chikungunya IgM antibody	Negative	Negative
Leptospira IgM antibody	Negative	Negative
Hantavirus RNA	Negative	Negative
Flavivirus RNA	Negative	Negative
Alphavirus RNA	Negative	Negative

SFFV: Sand fly fever virus; IgM: Immunoglobulin M.