- The recommended site for injecting pneumococcal conjugate vaccine and pentavalent vaccine vaccination among infants, just like the first patient is the anterolateral thigh, particularly in the vastus lateralis muscle. The vastus lateralis originates from the greater trochanter and linea aspera of the femur which inserts between the patella via quadriceps tendon and tibial tuberosity via patellar ligament. Furthermore, it is responsible for the leg and knee joint extension, and thigh flexion at the hip joint. In order to locate this area, imagine vertically dividing the thigh into three equal parts, then, visualize injecting the fluid into the outside top portion of the middle half.
- For this senior citizen patient, the recommended site for the intramuscular injection just like the influenza vaccine is the upper outer arm near the shoulder, specifically at the deltoid muscle. This scapular muscle emerges from the acromial extremity of the clavicle, acromion of the scapula, and the spine of the scapula, which, in turn is known for their anterior, lateral, and posterior fibers respectively. Moreover, it is enclosed within the deltoid tuberosity of the humerus and is responsible for the abduction, flexion, extension, medial and lateral rotation of the humerus. In order to locate the deltoid muscle, check for the bone at the uppermost part of the arm, then, a triangle muscle could be detected two finger-widths under this one. Furthermore, the middle of the triangle must be where the needle gets pierced.