• Nasim A Khan, Esam I Azhar, Suzan El-Fiky, Hosam H Madani, Maha A Abuljadial, Ahmad M Ashshi, Abdulhafis M Turkistani, and Esam A Hamouh.
• Division of Rheumatology, University of Arkansas for Medical Sciences, Mail Slot - 509, 4301 West Markham, Little Rock, AR 72205, USA. nakhan99@yahoo.com
• Acta Trop. 2008 Jan 1;105(1):39-44.

ObjectiveTo describe clinical profile of patients with dengue virus infection hospitalized at a single center during the first outbreak of dengue in Makkah, Saudi Arabia from April to July 2004.MethodsClinical information and laboratory abnormalities of patients with suspected dengue infection were collected by a standardized data collection sheet and review of medical records. Dengue virus infection was confirmed by a positive IgM capture ELISA or RT-PCR.ResultsOf the 160 clinically suspected patients, 91 were confirmed (64 by IgM ELISA, 14 by RT-PCR and 13 by both) to have dengue virus infection. Dengue serotypes 2 and 3 were identified in 19 and 4 patients respectively. Most patients were young adults with median age of 26 (range=6-94) years and male:female ratio of 1.5:1. The common symptoms were fever (100%), malaise (83%), musculoskeletal pain (81%), headache (75%), nausea (69%), vomiting (65%) and abdominal pain (48%). According to World Health Organization (WHO) classification (10 patients were excluded due to lack of serial hematocrits), 75 (93%) had dengue fever (DF) and 6 (7%) had dengue hemorrhagic fever (DHF). Only one patient with DHF was in pediatric age group. Twenty-one patients (5 with DHF and 16 with DF) developed one or more clinical complications that included bleeding (14), shock (4), seizures (3), acute renal failure (2), meningo-encephalitis (1), and secondary bacterial infection (1). Only one patient with shock had dengue shock syndrome (DSS) by WHO classification. Development of clinical complications was significantly associated with absence of musculoskeletal pain (p-value=0.03), lower platelet counts (p-value=0.03) and higher serum aspartate aminotransferase levels (p-value=0.04). The median duration of symptoms and hospitalization was 8 days (range=3-18) and 4 days (range=1-10) respectively. No mortality was noted.ConclusionOccurrence of dengue virus infection in Makkah, Saudi Arabia is documented. Continued surveillance and effective vector control programs are warranted due to unique population dynamics of Makkah that receives millions of pilgrims annually from all over the world.

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