10 Questions You Should to Know about Veterinary Aluminum Needles supplier

Dengue is an infectious disease caused by dengue viruses (DENV) spread among people through the bite of an infected mosquito from the Aedes species (Ae. aegypti or Ae. albopictus). DENV are members of the genus Flavivirus in the family Flaviviridae.

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There are four dengue virus serotypes (DENV-1, DENV-2, DENV-3, and DENV-4), all of which circulate globally. The four dengue virus serotypes are closely related but can be differentiated on serologic tests. Infection with one serotype generally produces long-lived immunity to that serotype, but only provides short-lived protection against infection with other serotypes. For this reason, a person can be infected with DENV as many as four times in their lifetime.

Symptoms of dengue range from asymptomatic or very mild (75% of cases) to severe disease complicated by shock, bleeding, or severe organ impairment. Fever is the most common symptom of dengue. Other symptoms can include sudden onset of headache, pain behind the eyes, loss of appetite, abdominal pain, nausea, vomiting, muscle aches, bone and joint pain, and flushing of the face. A generalized flat, red rash is often seen within 3&#;4 days of fever onset. Symptoms typically last 2&#;7 days, with most people recovering after about a week.

About 1 in 20 patients with dengue progress to severe dengue, typically 24-48 hours after the fever resolves. Severe dengue can become life-threatening within hours, often as a result of hypovolemic shock due to plasma leakage from the vasculature. There is no specific treatment for dengue. With proper supportive care in a hospital or intensive care unit setting, fewer than one in 100 people with severe dengue may die; fatality rates have been reported as high as 13% in the absence of adequate supportive care.

A person&#;s risk for progression to severe dengue varies based on several factors. Age (over 60), comorbidities (including pregnancy), host genetics, and the infecting virus strain are risk factors for severe dengue. For any individual, the second infection with a different DENV serotype is the most likely to cause severe dengue compared with the first, third, or fourth infections.

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CDC has a website with additional details on the clinical presentation of dengue:
https://www.cdc.gov/dengue/hcp/clinical-signs/index.html.

Needle Gauges and What They Mean

You can find felting needles in the following gauges: 32, 36, 38, 40 and 42, with the needles on either end of the spectrum being the least common. As the number gets higher, the needle is thinner (contrary to what one might think). If you have piercings, you can think of it that way - the typical earring is around 20 gauge, body piercings between 14 and 16 gauge, and those big plugs some people wear go down to 0 or 00, after which they're measured in either inches or centimeters/millimeters. 

Since most of us lack the tools to measure the gauge between needles, some felting supply companies provide them color coded, or you can easily do this yourself using different color nail polish as soon as you open the package before they get mixed in (don't forget to write down which color is what). I like to make handles for mine using polymer clay, then mark the gauge and type of needle in the clay before baking - but make sure you test the clay you use. I made the mistake of using Sculpey III and that resulted in brittle handles that didn&#;t hold up. I'm not good about remembering color codes and would rather be able to see it when I need it. It's not a huge deal if you don't color code them, because you can figure out which one works best for you by testing it out - however, if you have a lot of needles, or one breaks on you, it's nice to remember which one was your favorite when it comes time to order some more. Eventually, you&#;ll probably have one or two styles and sizes that you go to, and you won&#;t really need to keep track of what&#;s what - you&#;ll be able to tell by comparing them which one&#;s a bit skinnier for the finishing work.

Why all the different gauges? The thicker ones work better for coarse wool, while the thinner ones work better for fine wool. Why do they work this way? Because coarse wool is actually microscopically thicker than fine wool, so a thicker gauge needle would allow for a deeper notch to catch the fiber. That's not to say that a thick gauge would not work on a fine wool, but because it's thick, the holes from poking it in are far more visible. A finer gauge however will not work as well on a coarse wool, because the notches aren't deep enough to really grab it. You can still get the job done, but it'll take a lot more poking to get there. 

If you were to choose just one needle, which one would I recommend? The 38 gauge. It's a good in-between, not too thick for fine wool, but not too thin for coarse. You can even do finishing work if you poke very gently with only the tip and first one-to-two notches of the needle and alternating that with rubbing any holes out to smooth it. Ultimately, if you have a variety of them, even if it's just two or three different ones, you'll quickly get a feel for which one is the most efficient with whichever fiber you're trying to felt.

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