Isolates Currently Available

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Isolates as of June 8, 2021

Isolates as of January 9, 2018
Organism Year (number of unique strains) Demographic and clinical data available Laboratory testing results available
Streptococcus pneumoniae 1995 (n=647)
1996 (n=492)
1997 (n=640)
1998 (n=3168)
1999 (n=3979)
2000 (n=3736)
2001 (n=3529)
2002 (n=3147)
2003 (n=3242)
2004 (n=3067)
2005 (n=3489)
2006 (n=3530)
2007 (n=3534)
2008 (n=3775)
2009 (n=3863)
2010 (n=3608)
2011 (n=3300)
2012 (n=2869)
2013 (n=3015)
2014 (n=2388)
2015 (n=2339)
2016 (n=2757)
2017 (n=2959)
2018 (n=2934)
Age groups: < 1 yr, 1 yr, 2-4 yrs, 5-17 yrs, 18-34 yrs, 35-49 yrs, 50-64 yrs, ≥ 65 yrs

Source: cerebrospinal fluid (CSF), blood, or other sterile site
Serotype

Minimum inhibitory concentration for select antibiotics
Group A Streptococcus 1995 (n=278)
1996 (n=135)
1997 (n=206)
1998 (n=525)
1999 (n=653)
2000 (n=538)
2001 (n=326)
2002 (n=794)
2003 (n=1109)
2004 (n=856)
2005 (n=901)
2006 (n=982)
2007 (n=968)
2008 (n=962)
2009 (n=966)
2010 (n=1039)
2011 (n=1117)
2012 (n=908)
2013 (n=1029)
2014 (n=1270)
2015 (n=1399)
2016 (n=1745)
2017 (n=2209)
2018 (n=2310)		 Age groups: < 1 yr, 1 yr, 2-4 yrs, 5-17 yrs, 18-34 yrs, 35-49 yrs, 50-64 yrs, ≥ 65 yrs

Presence or absence of the following severe infections: NF*, STSS**, puerperal sepsis

Source: CSF, blood, or other sterile site

 emm typePresence or absence of serum opacity factor
Group B Streptococcus 1995 (n=4)
1996 (n=1)
1997 (n=0)
1998 (n=301)
1999 (n=372)
2000 (n=319)
2001 (n=261)
2002 (n=635)
2003 (n=1172)
2004 (n=1316)
2005 (n=1455)
2006 (n=1302)
2007 (n=1216)
2008 (n=1286)
2009 (n=1426)
2010 (n=1474)
2011 (n=1757)
2012 (n=1905)
2013 (n=2015)
2014 (n=1983)
2015 (n=2105)
2016 (n=2199)
2017 (n=2311)
2018 (n=2339)		 Data varies by age group.

For <1 year olds: onset [early (“0-6 days”), late (“7-89 days”) or other (≥90 days)]

For 1-49 year olds: pregnant (yes, no, unknown)

For 50-64 and ≥ 65 year olds: age group only

Source: CSF, blood, or other sterile site

 Serotype
Methicillin-Resistant Staphylococcus aureus The ABCs program no longer manages MRSA isolates. Find more information about MRSA surveillance.
H. influenzae 1995 (n=0)
1996 (n=5)
1997 (n=10)
1998 (n= 242)
1999 (n=248)
2000 (n=306)
2001 (n= 376)
2002 (n=389)
2003 (n=393)
2004 (n=418)
2005 (n=404)
2006 (n=488)
2007 (n=459)
2008 (n=487)
2009 (n=526)
2010 (n=540)
2011 (n=595)
2012 (n= 606)
2013 (n=674)
2014 (n=639)
2015 (n=728)
2016 (n=767)
2017 (n=920)
2018 (n=849)		 Age groups: < 1 yr, 1 yr, 2-4 yrs, 5-17 yrs, 18-34 yrs, 35-49 yrs, 50-64 yrs, ≥ 65 yrs

Source: CSF, blood, or other sterile site

 Serotype
N. meningitidis 1995 (n=150)
1996 (n=253)
1997 (n=291)
1998 (n= 259)
1999 (n=302)
2000 (n=237)
2001 (n= 254)
2002 (n=180)
2003 (n=195)
2004(n=140)
2005 (n=156)
2006 (n=138)
2007 (n=145)
2008 (n=148)
2009 (n=122)
2010 (n=76)
2011 (n=94)
2012 (n= 72)
2013 (n=51)
2014 (n=58)
2015 (n=66)
2016 (n=61)
2017 (n=53)
2018 (n=46)		 Age groups: < 1 yr, 1 yr, 2-4 yrs, 5-17 yrs, 18-34 yrs, 35-49 yrs, 50-64 yrs, ≥ 65 yrs

Source: CSF, blood, or other sterile site

 Serogroup

*Necrotizing fasciitis

** Streptococcal toxic shock syndrome

† Panton-Valentine leukocidin

§ Toxic shock syndrome toxin

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Page last reviewed: July 19, 2021
Content source: National Center for Immunization and Respiratory Diseases, Division of Bacterial Diseases