• What Exactly Is Typhoid Fever?
    Articles,  Blog

    What Exactly Is Typhoid Fever?

    Typhoid fever. Simply put, it’s a bacterial infection that comes largely from contaminated food, water, or sewage. But it’s not just a fever, typhoid can tear holes in your intestines and infect many other organs in your body. Oh, and it’s uniquely evolving to become more and more drug resistant. Typhoid fever is caused by a salmonella bacteria, but not the salmonella you’re probably thinking of. So the salmonella typhi bacteria is different from the salmonella that you might see in the U.S., which is the foodborne salmonellosis. I’m Anita Zaidi and I’m the director for the Bill and Melinda Gates Foundation’s Enteric and Diarrheal Disease team and the vaccine…

  • The Science of Getting (and Getting Rid of) a Tattoo
    Articles,  Blog

    The Science of Getting (and Getting Rid of) a Tattoo

    Nearly one in five people in America has a tattoo. So these permanent, portable pieces of art are clearly an important part of our culture — but how do they work? What makes a tattoo permanent, and can you really get rid of it? Well, tattoos work by taking advantage of the structure of your skin, and the composition of the ink that’s used. Your skin, for starters, is made up of three main layers of cells. On top, there’s the epidermis, which is exposed to the environment. Below that, there’s the dermis, and it’s full of hair follicles and sweat glands. And below that, you find the subcutaneous layer…

  • Eczema, Animation.
    Articles,  Blog

    Eczema, Animation.

    Eczema, or dermatitis, is a group of conditions characterized by inflammation of the skin. Among the many types of dermatitis, the most common is atopic dermatitis, also known as atopic eczema. Very often, when not specified otherwise, the term “eczema” is used to describe the atopic type. Symptoms of atopic dermatitis include rashes, redness, scaling, and occasionally small blisters. Depending on the patient’s age, these patches may appear on the face, scalp, neck, inside the elbows, behind the knees, on the buttocks, hands and feet. The condition evolves in the form of recurrent inflammatory flare-ups followed by periods of remission. Flare ups can be triggered upon contact with irritants such…