The cytoplasm of a bacterial cell contains the deoxyribonucleic acid (DNA) molecules that make up the bacterial genome (or nucleoid), the transcriptional machinery that copies DNA into ribonucleic acid (RNA), and the ribosomes that translate the messenger RNA information into protein sequence.
Influenza vaccine is recommended for all people over 6 months of age, it is an inexpensive way of protecting yourself, your family and your community from the spread of influenza. How long does protection from the vaccine last? The vaccine takes about 2 weeks to work and will last for about 12 months.
Individuals with a greater response to the vaccine will thus have better and longer lasting protection. Furthermore, as antibody levels fade (by approximately 50% in the first six months, with some leveling off over the next couple of years) so does protection. These are the reasons the CDC recommends annual flu shots for adequate protection each flu season.