Neither of these things are guaranteed to happen if you get the flu vaccine when you are sick, but they are possibilities. If you have just a mild illness, there is no reason to wait to get vaccinated.
Early in the day, let roast stand at room temperature at least 1 hour before cooking. Preheat oven to 375 degrees. Rub meat ... the outside and rare in the middle. Meat will be very brown ... stand at room temperature for at least one hour.
All types of Veal Roasts should be cooked at an oven temperature of 160 C (325 F) and meat thermometer 70 C to 77 C (160 F to 170 F) A Veal roast should be cooked fat side up, on a rack in a shallow roasting pan. Water should not be added and the roast should not be covered.