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A bacteriologist is a microbiologist or a professional  trained in bacteriology, a subdivision of microbiology. The duties of a bacteriologist primarily include prevention, diagnosis and prognosis of diseases. Alongside healthcare providers, they may carry out various functions such as epidemiological surveillance, quality auditing with biotechnology development, basic research, management and teaching related to the career, scientist management, laboratory coordination, and blood banks. 
The official name can vary depending on the laws of each country and how they are established in the society. Regardless of if they have a different official name among countries, the required background is similar.
|Canada||Laboratory Technician & histopathologist||Laboratory Technician & histopathologist |
|China||Bacteriologist and/or Clinical Laboratory Technician||Bacteriologist|
|Other countries i.e. Chile, Mexico, Spain||Biomedicine||Biomedical Scientist|
|Russia||Graduates in bioanalysis||Bioanalyst |
In the United States, bacteriologists are titled Medical Laboratory Scientists or Bachelor of Science, depending on their training. People in this profession are considered to be a Bachelor of Bacteriology.
The main aim is to predict, diagnose and the disease surveillance by a massive range of laboratory tests, all of them in the context of health care. Hence, a bacteriologist plays a role in research, management of health care, promoting health and disease prevention.
Biosecurity is the prevention of spread of potential pathogens, including unknown specimens. Bacteriologists work with differing equipment depending on the biosecurity level of their laboratory and the nature of work to be performed. This equipment may include: gown, masks, goggles, latex gloves, and biohazard cabinets. In laboratories containing highly dangerous microorganisms, bacteriologists use special biosafety suits.
In Colombia, the training of bacteriologists is regulated by the Bacteriologist National School “ Colegio Nacional de Bacteriólogo (CNB)”  which determine whether the professional is ready or not to perform the professional career by the obtaining of a professional card. This function is regulated by Article 2 of Act 1193 of 2008 (which amends Act 841 of 2003), which determines; "The National Association of Bacteriologists assumes the functions of issuing of the professional card referred in Article 5 of Act, the Professional Cards, meanwhile inscriptions or records Bacteriologists will be issued by the Ministries of Health of the different departments"
“While the National Association of Bacteriologists acts as the issue of the professional card referred to in Article 5 of this Law, the Professional Cards, inscriptions or records Bacteriologists will be issued by the Ministries of Health of the different departments” 
In Bioethical see National Court and Ethics Bacteriology know will handle disciplinary proceedings on appeal - Bioethics - ethics - which identify professionals who practice in the profession of bacteriology in Colombia for petty offences established in the existing laws matter. under Article 8 of Law 1193 of 2008.
Currently, to carry out the career in a different country to where initial studies were completed, it is necessary to do a type approval or validation.
It is not necessary the approval or validate, when the professionals pretend to improve the knowledge in a Hague member country ( Hague Convention), As long as the interested provided the correct documents legalization performed by the apostille convention, thus as ask for the postgraduates certificate access in accordance with paragraph c of Article 14 of Act 30 of 1992 (within Colombia),  It is necessary determine whether the destiny country is on the Hague member list. 
In Colombia, 28 April is celebrated as Bacteriologist's day. However, in other countries this does not exist or is not celebrated. An international day is not present.
André-Alfred Lemierre (born July 30, 1875, in Paris; died 1956) was a French bacteriologist. He described Lemierre's syndrome in 1936 while working as a bacteriologist in the Claude Bernard Hospital in Paris.
Sir William Watson Cheyne, 1st Baronet KCMG CB FRCS FRS (14 December 1852 – 19 April 1932) was a British surgeon and bacteriologist, who pioneered the use of antiseptic surgical methods in the United Kingdom.
This are some of the laws/acts that regulated to bacteriologist; (Spanish)
- "Bacteriologist: Job Description, Duties and Salary". Study.com. Retrieved 2017-04-03.
- "Act 841 of 2003" (PDF). By which the exercise of the profession is regulated bacteriologist, // the code of bioethics and other provisions are issued (in Spanish). Ministry of Education. Retrieved 15 May 2014.
- "Federal Education Act No. 24195/93 and its equivalent in the Province Act N ° 9330/01" (PDF). Establish a new structure of the education system Argentina (in Spanish). Governor. Retrieved 15 May 2014.
- "Law of the exercise Bioanalysis within Venezuela" (PDF). Venezuela (in Spanish). Ministry of Health and Social Welfare Surveillance exercise of Bioanalysis. Archived from the original (PDF) on 14 May 2014. Retrieved 15 May 2014.
- "Bacteriologist National School". Colombia (in Spanish). Dyservet.com. Retrieved 15 May 2014.
- "Act 30 of 1992" (PDF) (in Spanish). National Accreditation Council, Republic of Colombia. Archived from the original (PDF) on 2014-05-14. Retrieved 15 May 2014.
- "Hague member countries" (PDF) (in Spanish). cancilleria. Retrieved 15 May 2014.
- "Ley 1193 de 2008" (PDF) (in Spanish). Ministerio de Salud, Republica de Colombia. Archived from the original (PDF) on 2010-12-21. Retrieved 15 May 2014.
- "Decreto 4192 de 2010" (PDF) (in Spanish). Presidencia, Republica de Colombia. Archived from the original (PDF) on 2014-05-14. Retrieved 15 May 2014.
- "Resolución 5549 de 2010" (PDF) (in Spanish). Presidencia, Republica de Colombia. Archived from the original (PDF) on 2013-01-20. Retrieved 15 May 2014.