and Kerala. [4] All ages and both sexes were affected. [4] The disease is characterized by acute fever with or without chills, headache, nausea, abdominal pain, photophobia, conjunctival injection, skin rash, and disabling arthralgia. The incubation period ranges between 2 and 10 days. The disease usually affects adults as seen in the 2006 epidemic: of the 333 seropositive patients for chikungunya infection, 299 (90%) were aged older than 15 years. [5] Chikungunya originated from the word "kungunyala" (meaning "that which bends up"). The patient with this disease develops a stooped posture because of severe arthritis, typically affecting the wrists, hands, ankles, and feet. The fever and skin rash are short-lasting, but the joint pains may recur or linger for a long Background: Chikungunya is viral fever with the main symptom of joints pain for prolong duration. It persists as major public health problem till date. Objective: To know the seroprevalence, clinical presentation, and seasonal trends of chikungunya infection in a tertiary-care hospital in Ahmedabad, Gujarat, India. Materials and Methods: A retrospective observational study was conducted at a tertiary-care hospital in Ahmedabad. Totally, 2193 blood samples were received from different wards from suspected cases of chikungunya fever and tested for IgM antibody using ELISA in civil hospital Ahmedabad for duration of 1 year (September 2013 to August 2014). Result: Of the 2193 cases tested, 724 (33.01%) were positive for IgM antibodies; 33.28% were aged younger than 30 years and 66.71% older than 30 years. All presented with fever (100%), followed by joint pain, headache, body ache, joint swelling, and rash (93.6%, 73%, 39.7%, and 17.4%, respectively). Maximum cases were reported during September to January (31.98%, 35%, 36.41%, 43.34%, and 42.18%, respectively), with male subjects of 41.02% and female subjects, 58.97%. Conclusion: Seroprevalence of chikungunya in our study (33.01%), which was high in late monsoon and winter, suggests that it continues to be a major health problem in our setup and indicates the need of appropriate strategies to reduce the severity of disease.
Introduction:Influenza is viral fever with the main symptom of respiratory tract like cough, fever, breathlessness, nasal discharge, sore throat. The influenza affects a large segment of the world population resulting in significant mortality, morbidity and economic loss. Objective: To monitor the trend of influenza A virus. To know the prevalence of influenza A, H1N1 and seasonal H3 subtypes of influenza virus. To study the seasonal pattern of influenza A virus. Materials and Methods: This prospective study was carried out in the department of Microbiology, B.J. Medical College, Ahmadabad from January 2014 to December 2014. Surveillance samples were taken as per ILI (Influenza like illness) case definition for out Patient department and SARI (sever acute respiratory syndrome) for indoor patients. Total 614 samples are taken and tested with PCR method. Result: Out of 614 samples total 201(32.73%) were positive for influenza. Out of 201 positive samples, 13 (2.11%) were positive for swine H1N1 and 11 (1.79%) for seasonal H3, 177 (28.82%) were positive for influenza A. Conclusion: Prevalence of influenza 201(32.73%). out of this 13 (2.11%) were positive for swine H1N1 and 11 (1.79%) for seasonal H3, 177 (28.82%) were positive for influenza A. swine H1N1 was common in winter and seasonal H3 was common in late monsoon. swine H1N1 and seasonal H3 both are more common in male than female. swine H1N1 is more in >12 age and seasonal H3 is more common in <12 age.
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