Navigation Links
Rare Case of Hepatitis B Virus Transmission Between Dental Patients Recorded

Researchers have documented a case of hepatitis B virus (HBV) transmission between two patients at a dentist's office in the United States//. While this kind of infection is exceedingly rare, universal vaccination against the virus would likely have prevented both cases, according to the authors.

The case report, by John T. Redd, MD, MPH, and colleagues from the Centers for Disease Control and Prevention (CDC) and the New Mexico Department of Health, describes the index patient as a sexually inactive 60-year-old woman with no history of intravenous drug use or other potential exposures to HBV who had undergone multiple tooth extractions on a single office visit. A cross-match of the state's Hepatitis B Registry identified the source patient: a 36-year-old woman who had had teeth extracted hours earlier on the same day in the same office by the same surgeon and assistants, and receiving the same medications as the index patient. No evidence of HBV infection was found in any member of the office staff.

Blood tests indicated that the source patient had had chronic HBV infection with a high viral load at the time of oral surgery. Genetic analysis showed that virus of the same genotype and subtype was isolated from both patients, and that the isolates had identical DNA sequences in a sampled region. Medical records and blood tests of 25 patients operated on after the source patient showed that 16 (64 percent) were vaccinated and immune to HBV. "I was pleasantly surprised by the high prevalence of immunity," commented Dr. Redd. "It may have helped to limit spread of the virus."

How was the infection transmitted from source to index patient? When investigators visited the office and monitored its operation they found all staff members followed standard infection control practices. The investigators could only speculate that there might have been a lapse in clean-up procedures after the source patient, leaving an area contaminated with her blood.

HBV infection has long been a concern in dental infection control. The blood-borne pathogen is hardy, persisting in dried blood on surfaces for a week or more. It can be present even in the absence of visible blood.

With routine vaccination against the virus in U.S. dental health care personnel over the last two decades, the incidence of HBV infection in this high-risk group has dramatically fallen, and no cases of dentist-to-patient HBV transmission have been reported in the United States since 1987. This is the only known case of patient-to-patient transmission in a dental setting.

The authors concluded that the case underscored the need for meticulous maintenance of blood-borne pathogen infection control for all patients in dental settings. They also said that it reinforced the value of universal childhood HBV vaccination, which has been recommended in the United States since 1991.

In an accompanying editorial, Ban Mishu Allos, MD, and William Schaffner, MD, of Vanderbilt University School of Medicine, noted that adults account for most new cases of HBV infection in the United States, and that current recommendations based on such risk factors as sexual activity and intravenous drug use have resulted in meager vaccination rates. "Fewer than 10 percent of young adults with high-risk behaviors have received HBV vaccine," they said. In contrast, the incidence of HBV infection in children has been dramatically reduced by universal vaccination policies, and surgeon- and dentist-to-patient transmissions of the infection were essentially eliminated with routine vaccination of health care workers.

Accordingly, since those who engage in high-risk behaviors are generally younger, the editorialists recommended universal HBV vaccination of all adults up to age 40. "Universal age-based recommendations," they argued, "might have prevented both the source patient's infection and subsequent transmission t o the index patient in the oral surgeon's office."


Related medicine news :

1. Vitamin B for Hepatitis
2. Hepatitis G May Boost HIV Survival
3. Cure for Hepatitis B
4. Hepatitis E virus made impotent
5. Sharing injection equipment spreads Hepatitis C
6. Lymphomas Link to Hepatitis C
7. Hepatitis shots is promising
8. Need for Hepatitis Booster Questioned
9. Good News for HIV Patients Also Suffering From Hepatitis C Virus
10. The Link Between Hepatitis B Vaccine And Multiple Sclerosis Questioned
11. The Effectiveness Of Hepatitis B Vaccine Questioned
Post Your Comments:

(Date:6/25/2016)... ... June 25, 2016 , ... Dr. ... from injury. Recently, he has implemented orthobiologic procedures as a method for treating ... one of the first doctors to perform the treatment. Orthobiologics are substances that ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article ... are unfamiliar with. The article goes on to state that individuals are now more ... these less common operations such as calf and cheek reduction. The Los Angeles area ...
(Date:6/24/2016)... ... ... in a crisis. Her son James, eight, was out of control. Prone to extreme mood ... something upset him, he couldn’t control his emotions,” remembers Marcy. “If there was a ... children and say he was going to kill them. If we were driving on ...
(Date:6/24/2016)... ... June 24, 2016 , ... Dr. Amanda Cheng, ... treatment. Dr. Cheng has extensive experience with all areas of orthodontics, including robotic ... osteogenic orthodontics. , Micro-osteoperforation is a revolutionary adjunct to orthodontic treatment. It ...
(Date:6/24/2016)... , ... June 24, 2016 , ... People across the ... Genome magazine’s Code Talker Award, an essay contest in which patients and their families ... to be presented at the 2016 National Society of Genetic Counselors (NSGC) Annual Education ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... Calif. , June 23, 2016 Any dentist ... many challenges of the current process. Many of them do ... of the technical difficulties and high laboratory costs involved. And ... to offer it at such a high cost that the ... it. Dr. Parsa Zadeh , founder of ...
(Date:6/23/2016)... -- Research and Markets has announced the addition ... - Forecast to 2022" report to their offering. ... to date financial data derived from varied research sources to ... potential impact on the market during the next five years, ... of sub markets, regional and country level analysis. The report ...
(Date:6/23/2016)... , June 23, 2016 , ... Thursday, July 7, 2016 , , , , LOCATION: , ... , , , , EXPERT PANELISTS:  , , , Frost ... Industry Analyst, Christi Bird; Senior Industry Analyst, Divyaa Ravishankar and Unmesh ... The global pharmaceutical industry is witnessing an exceptional era. Several ...
Breaking Medicine Technology: