(1) Từ WHO: https://www.who.int/teams/health-product-policy-and-standards/standards-and-specifications/vaccines-quality/pneumococcal-conjugate-vaccines#:~:text=In%202005%2C%20WHO%20estimated%20that,whom%20live%20in%20developing%20countries

Truy cập vào 22/05/2022.

(2) de Steenhuijsen Piters WA, Sanders EA, Bogaert D. The role of the local microbial ecosystem in respiratory health and disease.

Philos Trans R Soc Lond B Biol Sci. 2015 Aug 19;370(1675):20140294.

(3) Từ NHS: https://www.nhsinform.scot/illnesses-and-conditions/infections-and-poisoning/pneumococcal-infections#:~:text=Pneumococcal%20infections%20usually%20fall%20into,tend%20to%20be%20more%20serious

Truy cập vào 22/05/2022.

(4) Từ WHO: https://www.who.int/teams/health-product-policy-and-standards/standards-and-specifications/vaccine-standardization/pneumococcal-disease

Truy cập vào 22/05/2022.

(5) Từ NFID: https://www.nfid.org/2022/06/03/protecting-adults-against-pneumococcal-disease/

Truy cập vào 21/06/2022.

(6) Từ CDC: https://www.cdc.gov/pneumococcal/about/risk-transmission.html

Truy cập vào 22/05/2022.

(7) Shea KM, Edelsberg J, Weycker D, Farkouh RA, Strutton DR, Pelton SI. Rates of pneumococcal disease in adults with chronic medical conditions.

Open Forum Infect Dis. 2014 May 27;1(1):ofu024.