Posted inDr. Roach

The effectiveness of vaccines is complicated

Dear Dr. Roach: I was wondering if you could explain why some vaccinations seem to completely protect against a disease, while others do not. For example, smallpox was completely eradicated by vaccination, and the hepatitis B vaccine is good for life and 98% to 100% effective, according to the World Health Organization. Yet we need […]

Posted inDr. Roach

sj.LifDrRoach. 030822

Dear Dr. Roach: I was wondering if you could explain why some vaccinations seem to completely protect against a disease, while others do not. For example, smallpox was completely eradicated by vaccination, and the hepatitis B vaccine is good for life and 98% to 100% effective, according to the World Health Organization. Yet we need […]

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Posted inDr. Roach

The effectiveness of vaccines is complicated

Dear Dr. Roach: I was wondering if you could explain why some vaccinations seem to completely protect against a disease, while others do not. For example, smallpox was completely eradicated by vaccination, and the hepatitis B vaccine is good for life and 98% to 100% effective, according to the World Health Organization. Yet we need […]

Posted inDr. Roach

To replace hormones or not

Dear Dr. Roach: I need some guidance on the use of estradiol. I have been taking a low dose (1 mg) for the past 15 years, following a hysterectomy and oophorectomy. My doctor said I needed it to provide the estrogen once provided by my ovaries that he had just removed. At the time I […]