What is Aedes index?
A novel entomological index, Aedes aegypti Breeding Percentage, reveals the geographical spread of the dengue vector in Singapore and serves as a spatial risk indicator for dengue | Parasites & Vectors | Full Text.
How do you calculate pupal index?
Pupae-per-person index (PPI), calculated as the total number of pupae found, divided by the total population of the inspected households. Household index (HI), calculated as the number of households with any larvae or pupae, divided by the total number of inspected households, multiplied by 100.
What is the extrinsic incubation period?
The extrinsic incubation period (EIP) of malaria, also called the period of sporogony, describes the time it takes for parasites to develop in the mosquito from point of ingestion via an infected blood meal, through to the point at which sporozoites enter the salivary glands and the mosquito becomes infectious.
Is spread by aedes aegypti?
Aedes aegypti is known to transmit dengue virus, yellow fever virus, chikungunya virus, and Zika virus. It is suggested to be a potential vector of Venezuelan Equine Encephalitis virus  and vector competency studies have shown Ae. aegypti is capable of transmitting West Nile virus.
Why is vector surveillance important?
The surveillance of vectors will help aid in the planning of public health policies and campaigns or control programs, and the development of action protocols etc.
What is incubation period of Covid 19?
Symptoms may develop 2 days to 2 weeks following exposure to the virus. A pooled analysis of 181 confirmed cases of COVID-19 outside Wuhan, China, found the mean incubation period to be 5.1 days and that 97.5% of individuals who developed symptoms did so within 11.5 days of infection. Read More.
What is intrinsic incubation period?
The intrinsic incubation period (IIP) is the time between a human being infected and the onset of symptoms due to the infection.
Do all Aedes carry dengue?
Foremost, you need to bust the dengue myth that every mosquito bite will cause dengue. Only the female Aedes aegypti mosquitoes can spread the dengue virus and in fact, these mosquitoes can transfer the infection only when they themselves are infected.
What is dengue positive report?
A positive result means you probably have been infected with the dengue virus. A negative result can mean you aren’t infected or you were tested too soon for the virus to show up in testing.
What is vector control in VFD?
Vector control, also called field-oriented control (FOC), is a variable-frequency drive (VFD) control method in which the stator currents of a three-phase AC or brushless DC electric motor are identified as two orthogonal components that can be visualized with a vector.
What is the life cycle of Aedes mosquito?
The Aedes mosquitoes have 4 life stages: egg, larva, pupa and adult. Mosquitoes can live and reproduce inside and outside the home. The entire life cycle, from an egg to an adult, takes approximately 8-10 days.
Is Covid contagious after 7 days?
Most people with COVID-19 are no longer contagious 5 days after they first have symptoms and have been fever-free for at least three days.
What does a high Breteau index of 4 mean?
Between February and April 2014, immediately before the 2014 outbreak, the Breteau Index was greater than 4 in 20 of 42 neighbourhoods. According to Sanchez et al., BI > 4 is indicative of epidemic outbreak 57, 58 .
Is the Breteau index above the epidemic risk threshold?
The overall average of the House, Container, and Breteau larval indices were 8.4%, 4.4%, and 10.9, respectively. However, 15 out of the 22 municipalities showed that the Breteau Index was above the epidemic risk threshold.
Is Breteau index a useful indicator for Aedes density?
Herein, Breteau Index (BI), one of the accepted indicators for Aedes density , was collected from various districts in Guangzhou.
What is the Breteau Index in Cocody?
In Cocody, the Breteau index was estimated at 297, the container index at 41%, and the house index at 82%. While in the municipality of Bingerville, these indices were respectively 213, 35% and 69%.