Q: Last year, you wrote about what to do about black marks on roofs. You said it was algae that built up from the product used in the shingles, and you gave a remedy for cleaning it off the shingles.

In winter, when immunity is low, they become vulnerable to various diseases, especially increasing the risk of developing ...

Expert opinion from Gustavo Campos Doctor of Medicine · 9 years of experience · Brazil Shingles are a late manifestation of chickenpox virus. Therefore, getting chickenpox vaccine will protect against ...