Long-term survival of Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis as isolates and in nasopharyngeal specimens in frozen STGG storage medium.

J Microbiol Methods. 2015 Apr 30;114:38-39. doi: 10.1016/j.mimet.2015.04.012. [Epub ahead of print]

Long-term survival of Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis as isolates and in nasopharyngeal specimens in frozen STGG storage medium.

Kaijalainen T1, Palmu A2.

Author information

Abstract

We evaluated survival in WHO-recommended STGG storage medium of bacteria causing respiratory-tract infection. Streptococcus pneumoniae and Moraxella catarrhalis survived as single and mixed isolates stored at -70°C for 12.5years, but Haemophilus influenzae less than 4years. All the bacteria survived in the nasopharyngeal specimens at -70°C for 11years.

Copyright © 2015 Elsevier B.V. All rights reserved.

KEYWORDS:

Deep-freeze; Long-term survival; Respiratory-tract bacteria; STGG storage medium

PMID: 25937246 [PubMed - as supplied by publisher]