dengue.pptx

community medicine

1. Introduction

2. In World 390 million dengue infections per year In India cases are increasing During 2017, the highest number of cases were reported from Tamil Nadu, followed by Kerala , Karnataka

3. Epidemiological factors

4. Agent Flavivirus Four serotype DENV-1 DENV-2 DENV-3 DENV-4

5. VECTOR Aedes Aegypti Aedes Albopictus

6. Environmental factors

7. Host factor Man is the only host Both sex equally effect High risk: infants, elderly, obesity, patients on steroids and NSAIDS, chronic diseases Occupation

8. Clinical manifestations Asymptomatic Undifferentiated fever Classical dengue fever Dengue hemorrhagic fever

9. Undifferentiated fever Fever Maculopapular rashes Upper respiratory and gastrointestinal symptoms

10. Classical dengue fever 3-10 days Sudden onset Chills, high fever, intense headache Muscle and joint pain Retro orbital pain Extreme weakness

11. Classical dengue fever Anorexia Constipation Altered taste sensation Abdominal tenderness Pain in inguinal region Sore throat General depression Rashes

12. Severe dengue Plasma leakage led to shock Severe bleeding Severe organ damage

13. Criteria for clinical diagnosis DF Clinical manifestations Leucopenia (<= 5000cells/mm3) Thrombocytopenia (<150,000 cells/mm3) Rising haematocrit Testing IgG titre IgM antibody Isolation of virus

14. Laboratory diagnosis Virus isolation Viral nucleic acid detection Immunological response and serological tests Viral antigen detection Rapid diagnostic test Analysis of haematological parameters

15. Management of DF ORS Juice P mol Tepid sponge Avoid aspirin NSAIDS Monitor urine output

16. Management of DHF Fluid intake Tepid sponge ORS, IV fluids Watch for initial signs of shock BP fall O2 administration Blood transfusion Platelet transfusion

17. Control measures Mosquito control Vaccines Other measures

18. Mosquito control measures

19. Vaccines CYD- TDV live attenuated viral vaccine 0.5ml 3 injections administered at 6 month intervals

20. Assignment Prepare for a discussion on Dengue hemorrgahic fever , dengue shock syndrome and its clinical phases in next class.

21. References Gulani K, K . Community Health Nursing: Principles and practice. KPH pub. NewDelhi Park K. Park’s Text book of preventive and social medicine, Banarsidas Bhanot Pub, Jabalpur Suryakantha AH .Community Medicine with recent advances, Jaypee Brothers medical pub. Delhi Rahim A. Principles and practice of community medicine, jaypee pub.Delhi