Practice reading the qualifier beside a health statement.
Read the summary. Notice that carriage and infection are described separately.
A common nose and throat resident that can also cause ear, lung, bloodstream and meningeal infection.
Read the distinction between latent infection and active disease.
The bacterium behind TB. Active disease differs from latent infection.
Read the summary and risk note, including the pregnancy qualifier.
A mosquito-borne virus that is usually mild but serious in pregnancy.