{"id":7969,"date":"2021-02-23T20:18:51","date_gmt":"2021-02-23T09:18:51","guid":{"rendered":"https:\/\/mvec.mcri.edu.au\/?post_type=references&p=7969"},"modified":"2026-06-18T18:00:49","modified_gmt":"2026-06-18T08:00:49","slug":"pneumococcal-disease-and-vaccines","status":"publish","type":"references","link":"https:\/\/mvec.mcri.edu.au\/zh\/references\/pneumococcal-disease-and-vaccines\/","title":{"rendered":"\u80ba\u708e\u7403\u83cc"},"content":{"rendered":"
<\/p>\n

What is it?<\/span><\/span><\/h2>\n

Pneumococcal disease is caused by infection with the bacteria <\/span>Streptococcus pneumoniae<\/span><\/i> (pneumococcus), which can live in the nose and throat (nasopharynx). In most cases it is considered part of the normal flora and generally does not cause illness or disease. However, in some cases the bacteria may grow and spread to other parts of the body that would normally be sterile, causing invasive pneumococcal disease (IPD), severe infections and complications. The bacteria can also cause non-invasive pneumococcal disease (non-IPD), for example, conjunctivitis and pneumonia.<\/span><\/p>\n

There are more than 95 different recognised serotypes of <\/span>Streptococcus pneumoniae<\/span><\/i> that have a distinct polysaccharide capsule (encapsulated strains). The capsule protects the bacteria from being easily destroyed by the body\u2019s immune system. Encapsulated strains are almost exclusively the cause of IPD. Non-encapsulated strains can also cause IPD; however, this is more likely in immunocompromised individuals.<\/span><\/p>\n

What to look for<\/span><\/span><\/h2>\n

The incubation period of pneumococcal disease is 1 to 3 days.<\/span><\/p>\n

Symptoms <\/span>will vary <\/span>depending on the site of infection and can <\/span>include:<\/span><\/p>\n