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Communicable Diseases

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Communicable Diseases

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Communicable Diseases

Aedes Mosquito Survey Method

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Communicable Diseases

Guidelines For Preparing Temephos Mother Solution 

The following are the guidelines for preparing and using the temephos mother solution to control the larvae and pupae of Aedes aegypti mosquitoes found in clean water storage containers.  This mother solution is to be prepared for use in clean water storage places such as cement tanks, wells, clay tanks, barrels, drums, and similar sites […]

  • krushna
  • December 4, 2025
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  • 86 Views
Communicable Diseases

Fogging guidelines for dengue fever survey

Fogging guidelines for dengue fever vector (Aedes egypti) control focus on timely, targeted application of insecticides to reduce Aedes mosquito populations and interrupt virus transmission. Details of operational principles commonly recommended in dengue fever outbreaks are given below. Method for Door-to-Door Fogging in the Village:   Indoor fogging should be conducted to kill Aedes aegypti mosquitoes […]

  • krushna
  • December 4, 2025
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  • 76 Views
Communicable Diseases

Tourniquet Test for Dengue Fever

The World Health Organization has included the use of the tourniquet test for the diagnosis of dengue infection. The accuracy of the tourniquet test for dengue fever varies, with some studies showing a sensitivity of around 90% and a specificity of about 72%, while others report a lower sensitivity of around 60% and a higher […]

  • krushna
  • December 2, 2025
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  • 98 Views
Effective Vector Control Measures for Dengue Fever Prevention
Communicable Diseases

Effective Vector Control Measures for Dengue Fever Prevention

Prevention is better than cure. So vector control is the primary strategy for preventing dengue virus transmission, as there is currently no specific antiviral treatment and vaccination coverage remains limited in most endemic areas. The management of dengue hemorrhagic fever and shock syndrome is very difficult to avoid death. The main targets are Aedes aegypti […]

  • krushna
  • December 1, 2025
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  • 59 Views
Communicable Diseases

Dengue Prevention Strategies in High-Burden Countries

Effective prevention and control strategies used (dengue fever) in high-burden countries High-burden countries employ a range of integrated, multi-pronged strategies for effective prevention and control vector-borne diseases like dengue fever Integrated Vector Management (IVM ) Major countries such as Brazil, Thailand, and India  use IVM approaches combining targeted insecticide use, source reduction, biological control, and […]

  • krushna
  • November 25, 2025
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  • 79 Views
Dengue
Communicable Diseases

Dengue Virus Transmission: Vertical (Transovarial) and Horizontal Pathways

A. Transovarian Transmission of Dengue Virus Transovarian transmission of the dengue virus means that a mother Aedes mosquito can pass the virus to her babies through her eggs. This helps the dengue virus stay alive and continue spreading among mosquitoes even when no humans around them are infected. Key Points on Transovarian Transmission   Mechanism The […]

  • krushna
  • November 25, 2025
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  • 77 Views
Signs and Symptoms of Dengue Fever
Communicable Diseases

Signs and Symptoms of Dengue Fever

Signs and Symptoms of Dengue Fever Common Signs and Symptoms of dengue fever are1) High Fever: up to 40°C or 104°F, typically sudden onset 2) Severe headache: Severe headache and pain behind the eyes (i.e., retro-orbital pain) 3) Muscle, Joint & bone Pain often called “breakbone-fever” 4) nausea, vomiting and poor appetite 5) Rash (macular or […]

  • krushna
  • November 24, 2025
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  • 74 Views
Transovarian transmission of dengue virus
Communicable Diseases

Transovarian transmission of dengue virus

Transovarian transmission of dengue virus refers to the passage of the virus from an infected female Aedes mosquito to her offspring through the eggs. This mechanism allows the dengue virus to be maintained and propagated within mosquito populations even in the absence of ongoing human infections. Key points on Transovarian transmission 1. Mechanism The virus […]

  • krushna
  • November 24, 2025
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  • 65 Views
Communicable Diseases

Dengue Transmission Cycle

The transmission cycle of dengue fever involves a human–mosquito–human cycle transmitted by infected female Aedes mosquitoes. Transmission Cycle Steps The cycle begins when a female Aedes mosquito bites an infected human and then transmits the virus to a new human. 1. Mosquito Bites an Infected Human A female Aedes mosquito feeds on a person infected […]

  • krushna
  • November 21, 2025
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  • 58 Views
Dengue
Communicable Diseases

Dengue Fever—Communicability & Laboratory Diagnosis

Period of Communicability The period of communicability in dengue fever refers to the time during which an infected person can transmit the virus to mosquitoes, which then can spread it to other humans. Laboratory Diagnosis of Dengue Fever The laboratory diagnosis of dengue fever relies on detecting the virus, its components, or the immune response […]

  • krushna
  • November 20, 2025
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  • 73 Views

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