Showing posts with label vaccine. Show all posts
Showing posts with label vaccine. Show all posts

Tuesday, December 13, 2011

Whitman-Walker and Travel Clinics

In trying to stay up to date on the blogging, I'm writing about yesterday's and today's clinics. I was going to write yesterday, but I decided to go out to dinner with friends instead.

Yesterday I was at Whitman-Walker Clinic, which started as a HIV/AIDS clinic in DC and is now mostly primary care for HIV-positive patients (among other things, but the primary care in HIV patients is what we do). Every three months, the patients come in for blood work, including a full chemistry panel, blood count, HIV viral lode, and CD4 count (the white blood cells that HIV attacks). Twice a year they also get blood work for hepatitis B and C and syphilis.

All the patients I saw yesterday are doing very well, as far as their HIV. In fact, for all of them, that was the least of their complaints. One recently had a heart attack, one was recently diagnosed with diabetes and colon cancer, and one fell and hurt his shoulder (there were others, too, but I don't remember if they had any complaints). I wonder if the people who started HIV care thirty years ago imagined that the disease would be so manageable that chronic diseases would be more of a concern than the HIV.

That was yesterday. Today was travel clinic at Ft. Myer. I had four patients, three different trips (the middle two patients were a husband and wife traveling together). Here's where they're going and what I did:

Tanzania:


The first patient is going on a two-week safari in Tanzania. She got a yellow fever vaccine (there's no yellow fever in Tanzania, but there is in Kenya and she has a connecting flight. Tanzania requires official WHO documentation of a yellow fever vaccine for everyone coming from Kenya) and a bunch of other vaccines, including typhoid, meningococcus, hepatitis A and B, polio, and flu. She also got a prescription for doxycycline for malaria prophylaxis (the map above is the malaria map, so you can see that it's everywhere) and prescriptions for Immodium and ciprofloxacin for traveler's diarrhea. I also discussed with her safe food and water, insect avoidance (wear DEET, sleep under mosquito nets, etc), avoiding animals (because they all have rabies), and standard safety information and how to register her trip with the State Department (so they know she's there if anything happens).

Southeast Asia:




The couple traveling together is a retired lieutenant colonel and his wife, going on a two week cruise to Southeast Asia. They needed surprisingly little for their trip. Both needed two shots--typhoid for both, influenza for him and pneumococcal for her--and I gave them prescriptions for traveler's diarrhea, but there's no malaria in any of the cities where they're stopping, so they didn't need anything for that. I did give them some DEET, because there is dengue, and the mosquitoes that carry dengue bite during the day, which is when they're going to be off the ship.

Eritrea:


My final patient was born in Eritrea and lived there until she was 13. This is her first time going back; she's going to visit friends and family for two months. She's mostly going to be in the capital, Asmara, where there is no malaria (the white spot in the middle of the map). Since she is planning on visiting people outside (in the giant red areas), we discussed malaria prophylaxis. There were a few choices: no prophylaxis, a few short courses of prophylaxis just for when she's outside Asmara, or prophylaxis the whole time. She decided on prophylaxis the whole time, so I prescribed mefloquine, since it's only once a week. She also needed a couple of shots--typhoid, flu, and polio. There's no yellow fever in Eritrea, so she didn't need that. I also gave her a few courses of Immodium and cipro in case of diarrhea, and we discussed the standard safety things and travel insurance and whatnot.

Not a bad two days. In other news, I have a couple of presents under my tree, so that makes me happy :)

Friday, November 18, 2011

Smallpox Vaccine Clinic

About a week and a half ago (hey, I'm a little proud of myself for only being a week and a half behind), I arrived early at Ft. Meade to attend smallpox vaccine clinic. Since smallpox vaccine isn't exactly routine, there's quite a lot of screening and education that goes along with it.

The education begins at 0630, with a CDC video about why we vaccinate against smallpox (since it's been, you know, eradicated and whatnot), how to vaccinate, and some of the risks. Quite frankly, I thought it was a bit too technical for the average audience (medical information for patients should be below the eighth grade level) and quite boring. It wouldn't be a bad video for doctors, nurses, and the techs who are administering the vaccine, but they need something better for the vaccinees. And something made in this century.

That took about 45 minutes, and then it was into the exam room to screen patients for vaccination. It's a very risk-averse environment, and there a lot of contraindications. Overall, the risk of infection is only theoretical--terrorists might have smallpox, but we have no proof of that. So if someone has a slightly increased risk of having an adverse effect from the vaccine, we're not going to give it. Some of the contraindications of vaccinating are skin problems (eczema, psoriasis, severe acne, etc) or skin problems in any close contacts (family members). This is why:


This is eczema vaccinatum and the result of someone with eczema being in contact with the vaccinia virus. People with intact skin will only get vaccinia at the sit of innoculation (the hands of milkmaids in the good old days, the right deltoids of vaccinees today), but people with such skin problems can get cowpox (vaccinia) everywhere. And it's quite serious.

Anyway, other contraindications of smallpox vaccination are dry eyes (because people with dry eyes rub them, and getting vaccinia in the eyes would be bad), immunosuppression (from HIV or certain medications), close contact with infants younger than 12 months, having another live virus vaccination within the last four weeks (such as FluMist), and certain heart problems, since smallpox vaccination can cause heart problems in even healthy people. Of the three people in vaccination clinic when I was there, only got vaccinated. Of the other two, one had FluMist the week before, and the other had both close contact with an infant and severe acne. Interestingly, the one who did get vaccinated was born outside the United States and had a BCG vaccination at birth (to protect against TB) and scar from that. Little known fact: according to the WHO, the BCG vaccine is given in the left deltoid, and the smallpox vaccine on the right, because they leave identical scars. By having it standardized back in the days when many people got both, you could tell who had had what.

I did watch the tech do the vaccination (he made me stand on the other side of the room, since I haven't been vaccinated). It looks kinda like this:


This is the only vaccine that uses a bifurcated needle. How it's done is that the needle is dipped into the vaccine so it leaves a small drop between the two prongs. Then, using the hand technique demonstrated here, the arm is stabbed with the needle fifteen times quickly, deep enough to leave a drop of blood. The site is then covered with a piece of gauze and the vaccinee is given instructions on how to care for the vaccination site. If everything goes right, the site should look like this:


And then it leaves a small, permanent scar. Quite enjoyable. Can't wait for mine (sarcasm).