First report of chikungunya from the Maldives

Abdul Azeez Yoosuf1, Ibrahim Shiham, Ahmed Jamsheed Mohamed

  • 1Ministry of Health, Malé 20379, Republic of Maldives.

Insights

Chikungunya virus outbreak confirmed in the Maldives in 2006. This mosquito-borne illness caused widespread fever and joint pain, affecting over 11,000 people across 61% of islands.

Area of Science:

  • Medical Entomology
  • Infectious Diseases
  • Epidemiology

Background:

  • An outbreak of fever, arthralgia, and myalgia occurred in the Maldives starting December 2006.
  • Clinical symptoms and regional epidemics suggested chikungunya virus as the cause.

Purpose of the Study:

  • To investigate and confirm the presence of chikungunya virus during the 2006-2007 outbreak in the Maldives.

Main Methods:

  • Blood samples were collected from 67 patients.
  • Chikungunya virus infection was detected using IgM antibody testing and PCR.
  • Dengue virus co-infection was assessed via enzyme immunosorbent assay.

Main Results:

  • 21% of patients were IgM-positive and 96% were PCR-positive for chikungunya.
  • 6% tested positive for dengue, with 4% showing dual infection.
  • The epidemic affected 11,879 individuals across 61% of inhabited islands by April 2007.

Conclusions:

  • Chikungunya fever was confirmed for the first time in the Maldives.
  • The outbreak had a significant attack rate, impacting a large proportion of the island nation.

Related Concept Videos

Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...