Dengue
Posted by Jo Anna on April 6, 2021, 9:53 am
One confirmed case that I know of ... and no, I'll not be naming my source; that's up to him/her to name him/herself, but it is doctor diagnosed. This is just to suggest we dig out that bug repellant we've had so little call to use this year.
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Posted by Daniel H on April 6, 2021, 12:27 pm, in reply to "Dengue"
Thanks Jo Anna, main part of your post is that you know the person and that it was doctor diagnosed. I thoght it may be useful information to know what part of town your friend lived in as I have always thought that mosquitos usually stayed within 100 yards of home. I searched that and discovered its not true so I debunked my own belief. In flight The average mosquito flies at about 1.5 miles per hour, and will not go far away from the area that they were hatched. Most will only fly about one to three miles in search of food. But this is really dependent on the species of mosquito. In the midwest, certain species will fly up to seven miles away searching. Mosquitoes tend to stay below twenty five feet when searching for food. When they reach higher altitudes, it is easier for the wind to pick them up and sweep them away from their home location. https://myoutdoorslife.com/basics/how-far-do-mosquitoes-travel.html I remember reading that previously having Dengue could be a plus when positive for coronavirus. I did a search and didn't read further than the results page as I saw several conflicting titles and realized that it is just like everything else COVID related i.e. confusing. https://duckduckgo.com/?q=dengue+and+coronavirus&t=hd&va=o&ia=web Here are some various notes of interest I copy pasted while reading a few sources. Vector Ecology Female Ae. aegypti frequently feed multiple times between each egg-laying period [20]. Once a female has laid her eggs, these eggs can remain viable for several months, and will hatch when they in contact with water. Aedes albopictus, a secondary dengue vector in Asia, has spread to more than 32 states in the USA, and more than 25 countries in the European Region, largely due to the international trade in used tyres (a breeding habitat) and other goods (e.g. lucky bamboo). Ae. albopictus is highly adaptive. Its geographical spread is largely due to its tolerance of colder conditions, as an egg and adult [21, 22] https://www.who.int/news-room/fact-sheets/detail/dengue-and-severe-dengue Symptoms Many people experience no signs or symptoms of a dengue infection. Causes After you've recovered from dengue fever, you have long-term immunity to the type of virus that infected you — but not to the other three dengue fever virus types. This means you can be infected again in the future by one of the other three virus types. Your risk of developing severe dengue fever increases if you get dengue fever a second, third or fourth time. https://www.mayoclinic.org/diseases-conditions/dengue-fever/symptoms-causes/syc-20353078 Signs and symptoms typically, people infected with dengue virus are asymptomatic (80%) or have only mild symptoms such as an uncomplicated fever Predisposition Severe disease is more common in babies and young children, and in contrast to many other infections, it is more common in children who are relatively well nourished.[13] Other risk factors for severe disease include female sex, high body mass index,[25] and viral load.[46] Prevention Generalized spraying with organophosphate or pyrethroid insecticides, while sometimes done, is not thought to be effective.[22] Vaccine A vaccine for dengue fever has been approved and is commercially available in a number of countries.[4][9] As of 2018, the vaccine is only recommended in individuals who have been previously infected, or in populations with a high rate of prior infection by age nine. Epidemiology Rates of dengue increased 30 fold between 1960 and 2010.[75] This increase is believed to be due to a combination of urbanization, population growth, increased international travel, and global warming. https://en.wikipedia.org/wiki/Dengue_fever
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Posted by Daniel H on April 7, 2021, 8:38 am, in reply to "Re: Dengue"
I did a bit more on this topic, here are the notes COVID-19 and dengue - CDC Good comparison chart https://www.cdc.gov/dengue/is-it-dengue-or-covid.html COVID-19 and dengue fever: similarities and differences https://barbadostoday.bb/2021/04/06/covid-19-and-dengue-fever-similarities-and-differences/ Assessment of dengue and COVID-19 antibody rapid diagnostic tests Conclusion Despite the high specificity of the COVID-19 RDT, we observed cross-reactions and false-positive results between dengue and COVID-19. Dengue and COVID-19 co-infection was also found. Health practitioners in dengue endemic areas should be careful when using antibody RDT for the diagnosis of dengue during the COVID-19 pandemic to avoid misdiagnosis. https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01522-2 Dengue exposure may provide some COVID-19 immunity, researchers say - this is the article I read September last year, there should be more info on it by now but I didn't pursue it. https://thehill.com/policy/healthcare/517495-dengue-exposure-may-provide-some-covid-19-immunity-researchers-say Dengue Fever News https://www.sciencedaily.com/news/health_medicine/dengue_fever/ Scientists find antibody that blocks dengue virus Currently, there are no effective treatments or vaccines for the dengue virus. Since there are four different strains of the virus, building up antibodies against one strain can actually leave people more vulnerable to subsequent infection from another strain, which makes finding an effective therapeutic more difficult. The dengue virus uses a particular protein, called Non-Structural Protein 1 (NS1), to latch onto the protective cells around organs. It weakens the protective barrier, allowing the virus to infect the cell, and may cause the rupture of blood vessels. The research team's antibody, called 2B7, physically blocks the NS1 protein, preventing it from attaching itself to cells and slowing the spread of the virus. Moreover, because it attacks the protein directly and not the virus particle itself, 2B7 is effective against all four strains of the dengue virus. https://www.sciencedaily.com/releases/2021/01/210113120708.htm IIT Delhi Develops Device For Early, Rapid Diagnosis Of Dengue New Delhi: Researchers at the Indian Institute of Technology (IIT) Delhi have developed a handheld device for early diagnosis of dengue. The device can give a dengue test result in one hour. https://www.ndtv.com/education/iit-delhi-develops-device-for-early-rapid-diagnosis-of-dengue Globe At Home offers free COVID and dengue insurance vouchers - Philippines https://mb.com.ph/2021/04/07/globe-at-home-offers-free-covid-and-dengue-insurance-vouchers/
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Posted by RickF on April 7, 2021, 8:42 pm, in reply to "Re: Dengue"
... in this Wikipedia page there is a highly detailed map of the range of the Adeus Egypti mosquito... the bug responsible for spreading Dengue and Zika. Although the map doesn't show it, this hardly little mossie has been detected on the lower mainland of British Columbia. https://en.wikipedia.org/wiki/Aedes_aegypti | -----------------------Re: Dengue
Posted by Jo Anna on April 7, 2021, 10:39 am, in reply to "Re: Dengue"
Lots of useful information here, Daniel; thanks for doing the research and passing it along. | -----------------------
Be sure to visit www.lamanzanilla.info for more information about La Manzanilla Mexico.
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