Mosquito Questions

gobot wrote:

Jim-Minh wrote:

DEET penetrates the skin and enters the bloodstream quickly.

That doesn't sound like a good thing.

Going2Cali wrote:

I plan to come back to Danang in Feb and stay for 3 months. Is it really necessary as the CDC suggests to get the Japanese Encephalitis injection?

What are my risks in Danang Feb, March and April?

Let's do the math.

According to
https://www.vietnammedicalpractice.com/ … litis.html

There were 325 cases of encephalitis in Vietnam in 2017
Japanese encephalitis was responsibile for 15%, or 49 cases of encephalitis.
Nationwide that is 49 cases per 95,000,000 people
12% of cases were in central Vietnam
49 * .12 = 6 cases in central Vietnam
So the risk is 6 in 95,000,000

However, a 3 month visit would cut your risk of exposure to one quarter of a year
That quarter, Feb, March, April, is the dry season, so less mosquitos
Central Da Nang is not a rural area, so less mosquitos
As a tourist, even in rural areas, you wouldn't be living as close to the earth as locals (aircon
hotel room vs living and working in open air) so less mosquitos

Still nervous? This scary headline yells 'Rare doesn't mean Never'.
https://www.travelvax.com.au/latest-new … are-doesn-

There were 62 reported travel-related (meaning tourist) JE cases in 40 years.
The math:
Statistically only 1.5 tourists per year contracted japanese encephalitis.
Last year there were 10 million tourists to Vietnam, 35 million to Thailand, etc.

Editorial:
There are a whole lot of far worse things to fear with a frequency greater than 1/100,000,000. Save your money.

In addition to that:

Most JEV infections are mild (fever and headache) or without apparent symptoms, but approximately 0.4% of infections result in severe clinical illness.

https://www.vaccineimpact.org/diseases/je/

tunnelrat69 wrote:

SOFFELL mosquito repellant packets, you can buy them in any mom and pop store, I carry them to Africa with me and they work on the biting bugs there as well...........

FYI  permetherin is used for your clothing, and mosquito nets  -  it is a very strong poison to be putting on your bare skin...........no matter what the dillution, I wouldn't use it on my skin............I spray it around the the grass as well..........we have not many probs with mosquitos and I live in the Mekong Delta.

Can you please advise where I can buy the permetherin? Which stores have it? Thanks so much.

gobot wrote:

Jim-Minh wrote:

DEET penetrates the skin and enters the bloodstream quickly.

That doesn't sound like a good thing.

From WebMD:

Sunscreen May Speed Absorption of DEET Through Skin.
The study showed that combining sunscreen with DEET caused the skin to absorb the insect repellent more than three times faster than when used alone.

https://www.webmd.com/skin-problems-and … good-mix#1

What are side effects of DEET?
Most cases of seizures, slurred speech, coma and other serious side effects have occurred in people who ingested DEET or applied it for three or more days in a row, or used products with 95 percent DEET or more. It's unclear whether lower doses pose the same risks, especially if you follow directions.Jun 23, 2014