For maximum assurance preventing influenza or flu, the patient should be vaccinated with inactivated influenza vaccine (IIV) once a year. The vaccine is needed especially for those who are of greater risk to have a flu, including pregnant women, children, and persons with serious medical conditions.
A diet high in calcium and low in sugar
Astigmatism is a condition in which the cornea is stretched out of proportion, making it harder to see things properly. This can be corrected with corrective lenses or eye surgery.
One of the most important characteristics of sailors is that they were able to draw new sailors into the Revolutionary cause, what you've stated in your question. :)
Hope this helps