Molecular characteristics of methicillin-resistant <i>Staphylococcus aureus</i> isolates from hospital and community environments in northeastern Brazil

Carvalho, Suzi P. de; Almeida, Jéssica B. de; Andrade, Yasmin M.F.S.; Silva, Lucas S.C. da; Chamon, Raiane C.; Santos, Kátia R.N. dos; Marques, Lucas M.

doi:10.1016/j.bjid.2019.04.005

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Brief Communications • Braz J Infect Dis 23 (2) • Mar-Apr 2019 • https://doi.org/10.1016/j.bjid.2019.04.005 linkcopy

Molecular characteristics of methicillin-resistant Staphylococcus aureus isolates from hospital and community environments in northeastern Brazil

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ABSTRACT

This study characterized 30 MRSA isolates from intensive care unit (ICU) environment and equipment surfaces and healthy children. The SCCmec types I, IVa and V were detected in HA-MRSA isolates while CA-MRSA showed the SCCmec type IVa and V. Most isolates were classified as agr group II. All isolates presented the sei gene, and only HA-MRSA were positive for etb e tst genes. Three genotypes were related to Pediatric (ST5/SCCmecIV) and Berlin (ST45/SCCmecIV) clones. The present study showed molecular similarity between CA- and HA-MRSA isolates in hospital and community settings in a Brazilian region.

Keywords: Methicillin-resistant Staphylococcus aureus; CA-MRSA; HA-MRSA; Molecular typing

Isolate number	Origin	Isolation source	MRSA origin	SCCmec type	agr type	Virulence gene profile	PFGE type	ST/CC	spa type
17A	H1	Telephone - ICU	HA	IVa	1	etb, sei, icaD	A1	45/45	t371
C137	DCC 4	Nasal Swab	CA	IVa	1	seg, sei, icaD	A1	45/45	t371
52	H2	Control panel	HA	IVa	1	sei, icaA/icaD	A2	2228/45	t004
59	H2	Drug's dilution countertops	HA	IVa	1	etb, sei, icaD	A2	2228/45	t004
85.1	H2	Bed-drawer knob - PICU	HA	IVa	1	eta, se, icaA/icaD	A2	2228/45	t004
C60	DCC 2	Nasal Swab	CA	IVa	1	eta, seb, seg, sei, sej, icaD	A2	2228/45	t004
C18	DCC 1	Nasal Swab	CA	V	4	eta, seg, sei, icaD	J	398/398	t242
C83	DCC 2	Nasal Swab	CA	V	4	eta, seb, seg, sei, sej, icaD	J	398/398	t242
12D	H1	Control panel - ICU	HA	V	2	etb, sei tst, icaA/icaD	B1	676/5	t9784
47.1	H2	Drug's dilution countertops	HA	V	2	sei, icaD	B2	461/5	t5085
43.1	H2	Floor	HA	V	2	sei, icaA/icaD	B3	5/5	t311
91	H2	Floor of drug's dilution room	HA	IVa	2	sei, tst, icaD	C	5/5	t242
101	H2	Sink PICU	HA	IVa	2	sei, icaA/icaD	C	5/5	t242
27A	H1	Baby Crib	HA	IVa	2	etb, sei, tst, icaA/icaD	C	5/5	t242
C138	DCC 4	Nasal Swab	CA	IVa	2	seg, sei, sej, icaD	C	5/5	t242
C48	DCC 2	Nasal Swab	CA	IVa	2	seg, sei, sej, icaD	C	5/5	t242
C54	DCC 2	Nasal Swab	CA	IVa	2	seg, sei, sej, icaD	C	5/5	t242
C77	DCC 2	Nasal Swab	CA	IVa	2	seg, sei, icaD	C	5/5	t242
C94	DCC 3	Nasal Swab	CA	IVa	2	seg, sei, sej, icaD	C	5/5	t242
16A	H1	Weighing-machine	HA	V	2	etb, sei, icaD	D	2226/5	t3374
28	H1	Control panel - Baby Crib	HA	I	2	etb, sei, icaD	E	1427/5	t5046
29	H1	Control panel ICU	HA	I	2	etb, sei, tst, icaA/icaD	E	1427/5	t5046
33A	H1	Telephone - ICU	HA	I	2	etb, etb, sei, icaD	E	1427/5	t5046
39	H2	Medicine's fridge	HA	I	2	etb, sei, icaD	F	3050/45	t3374
41	H2	Prescription paper	HA	I	2	etb, sei, icaD	F	3050/45	t3374
62	H2	Prescription paper	HA	I	2	etb sei, icaD	F	3050/45	t3374
74	H2	Emergency stretcher	HA	I	2	eta, etb, sei, icaA/icaD	F	3050/45	t3374
67	H2	Control panel	HA	V	2	sei, icaA/icaD	G	3019/45	t11545
C152	DCC 4	Nasal Swab	CA	V	2	seg, sei, sej, icaD	H	5/5	t242
C80	DCC2	Nasal Swab	CA	IVa	2	seg, sei, icaD	I	5/5	t002

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Brazilian Society of Infectious Diseases Rua Augusto Viana, SN, 6º., 40110-060 Salvador - Bahia - Brazil, Telefax: (55 71) 3283-8172, Fax: (55 71) 3247-2756 - Salvador - BA - Brazil
E-mail: bjid@bjid.org.br

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[TFN1] H1, Hospital Municipal Esaú Matos; H2, Hospital Geral de Vitória de Conquista; DCC, day care center; HA-MRSA, hospital-acquired MRSA; CA-MRSA, community-acquired MRSA; ICU, intensive care unit; PICU, pediatric intensive care unit; SCCmec, Staphylococcal cassete chromosome mec; agr, accessory gene regulator; PFGE, pulsed field gel electrophoresis; ST, sequence type; CC, clonal complex.