How many days does the pneumonia vaccine take effect?

Written by Yang Feng

Pulmonology

Updated on October 31, 2024

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Pneumonia is a common infectious disease of the respiratory system. For the elderly who are frail, infants and young children who repeatedly suffer from pulmonary infections, and adults with immune deficiencies, it is an option to get vaccinated against pneumonia. Generally, antibodies are produced in the body 2 to 3 weeks after vaccination, which may protect against most types of pneumococcal bacteria. Different pneumonia vaccines vary in the duration the antibodies last in the body, with most lasting about one year. For bivalent and trivalent pneumonia vaccines, the immune protection can last about five years.

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Written by Li Jiao Yan

Neonatology

1min 38sec

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Differential Diagnosis of Pediatric Pneumonia

Childhood pneumonia needs to be differentiated from other respiratory diseases such as bronchial foreign bodies, bronchial asthma, and pulmonary tuberculosis. A bronchial foreign body generally has a history of inhalation of foreign objects, sudden choking coughs, and a chest X-ray might indicate atelectasis or pulmonary emphysema. If the foreign body has been present for a long time, the disease course is prolonged and may lead to secondary infections, similar to pneumonia or concurrent with pneumonia. The differentiation of bronchial foreign body involves detailed medical history inquiries to check for inhaled foreign objects, then using symptoms and auxiliary examinations like chest X-rays for confirmation. Bronchial asthma, especially in children, might not always present with obvious wheezing attacks but rather persistent coughing. The X-ray might show increased and disordered lung markings and pulmonary emphysema, which can easily be confused with pneumonia. Typically, children with bronchial asthma have an allergic constitution and generally require pulmonary function tests and other auxiliary examinations to differentiate from pneumonia. Pulmonary tuberculosis generally occurs in those with a history of contact with tuberculosis patients. Their tuberculin skin test is positive, and X-rays may show features of tuberculosis lesions in the lungs, which can be used to differentiate from pneumonia.

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Written by Yang Feng

Pulmonology

51sec

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Symptoms of pneumonia in children

Pneumonia is a particularly common infectious disease of the respiratory system, and infants and young children are especially susceptible to pneumonia because their immune systems are much weaker than those of healthy adults. When infants and young children develop pneumonia, their symptoms differ from adults; they often exhibit only fever, crying, nausea, vomiting, etc. The symptoms of coughing and phlegm are relatively less obvious, making the diagnosis of pneumonia in infants and young children somewhat more difficult. If a patient exhibits fever, auscultation and routine blood tests can be used to preliminarily determine the presence of an infection. If pneumonia is suspected, further comprehensive imaging examinations can be conducted to confirm the diagnosis.

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Written by Li Jiao Yan

Neonatology

46sec

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Symptoms of pneumonia cough in children

Pneumonia in infants commonly occurs in young children, especially those under two years of age. The onset of the disease is usually rapid, starting with symptoms of upper respiratory tract infections that gradually evolve into more pronounced respiratory symptoms. The cough is frequent, initially a dry, irritating cough, that progressively worsens as the disease advances. In cases of severe pneumonia, the cough may actually lessen. During the recovery phase, the cough gradually diminishes and rattling sounds can be heard in the throat due to mucus. After the mucus is cleared, there may still be occasional bouts of irritating dry cough, which will slowly subside.

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Written by Li Jiao Yan

Neonatology

1min 18sec

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The function of the pneumonia vaccine

Pneumonia vaccines are generally aimed at preventing infections caused by Streptococcus pneumoniae. There are two common types of vaccines: the 23-valent polysaccharide vaccine, which is suitable for high-risk populations over two years old, and the 7-valent or 13-valent conjugate vaccines, which are mainly used for vaccinating infants under two years of age. Streptococcus pneumoniae is the most common and widespread bacterium causing pneumonia, and pneumonia caused by this bacterium is also the most prevalent worldwide. It is also the most significant pathogen in community-acquired pneumonia in children and a major cause of otitis media, meningitis, and bacteremia in children. The pneumonia vaccines mainly target common serotypes of Streptococcus pneumoniae, such as the 7-valent or 13-valent, designed to prevent infections from seven or thirteen serotypes, respectively, while the 23-valent vaccine aims to prevent infections from 23 serotypes. These pneumonia vaccines play a significant protective role in preventing infections caused by Streptococcus pneumoniae, however, they cannot prevent all cases of pneumonia.

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Written by Li Jian Wu

Pulmonology

42sec

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Pneumonia symptoms in children

Children presenting with pneumonia primarily exhibit symptoms related to respiratory infections, with fever often as a typical manifestation. Common symptoms include sudden chills, high fever, fatigue, headache, nausea, and vomiting, followed by an irritative dry cough. As the condition progresses, the dry cough turns into a productive cough with phlegm, accompanied by difficulty breathing, chest pain, and expectoration. Some may also show signs of oxygen deprivation such as cyanosis of the lips and changes in nail color. Active chest X-ray and routine blood tests are necessary for diagnosis.