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Dear Dr. Roach: Why aren鈥檛 hospitals across the country mandating all personnel be vaccinated against COVID-19? I am getting conflicting information.

Dear Dr. Roach: Could you address problems that may or may not be aftereffects of COVID-19? The problems seem to be common among people who have had COVID-19, but not acknowledged by all medical professionals. A.C.S.

Dear Dr. Roach: I have chronic venous insufficiency. My doctor tells me there is nothing for it but compression socks, and I cannot put them on. S.G. Chronic venous insufficiency is a disease of the veins, most commonly in the legs.

Dear Dr. Roach: I鈥檝e been taking calcium supplements for many years to assist in strengthening my bones. I鈥檓 74, weigh less than 95 pounds and stand five feet tall.

Dear Dr.

Dear Dr. Roach: I have been having colonoscopies regularly since 1990. I was due for one last year, but it was postponed due to COVID-19. My previous doctor had retired and I found another physician who, I thought, would be excellent.

Dear Dr.

Dear Dr. Roach: I am a 78-year-old woman, and I am in my 10th week of shingles. I have them on my left chest and back (at the bra line) and on my upper arm. I can鈥檛 go anywhere because I can鈥檛 stand when my clothes or bra touches me.

Dear Dr. Roach: We know COVID-19 came from Wuhan, China. Where are the Delta and other variants coming from? D.B.

Dear Dr. Roach: How does one manage natural immunity to COVID-19 if one has an autoimmune disease? Does that person take vitamin D3, zinc, etc.? J.K.S.