This TLV is 40 times lower than the current OSHA permissible exposure limit, reflecting the ACGIH analysis of best available peer-reviewed research data concerning how little airborne beryllium is required to cause sensitization and CBD.Because it can be difficult to control industrial exposures to beryllium, it is advisable to use any methods possible to reduce airborne and surface contamination by beryllium, to minimize the use of beryllium and beryllium-containing alloys whenever possible, and to educate people about the potential hazards if they are likely to encounter beryllium dust or fumes. It is important to damp wipe metallographic preparation equipment to prevent accumulation of dry particles. Sectioning, grinding, and polishing must be performed under sufficiently vented hoods equipped with special filters.On 29 January 2009, the Los Alamos National Laboratory announced it was notifying nearly 2,000 current and former employees and visitors that they may have been exposed to beryllium in the lab and may be at risk of disease. Concern over possible exposure to the material was first raised in November 2008, when a box containing beryllium was received at the laboratorys short-term storage facility.
There is not yet sufficient evidence on how effective this combined pentavalent vaccine is in relation to the individual vaccines. References
Further reading
Ramsay M, ed. (2013). "Chapter 16: Haemophilus influenzae type b (Hib)". Immunisation against infectious disease. Public Health England. External sources
"Haemophilus Influenzae Type b (Hib) Vaccine Information Statement". U.S. Centers for Disease Control and Prevention (CDC). 10 August 2021. "Haemophilus B Conjugate Vaccine (Meningococcal Protein Conjugate)". U.S. Food and Drug Administration (FDA). 24 April 2019. "Haemophilus b Conjugate Vaccine (Tetanus Toxoid Conjugate)". U.S. Food and Drug Administration (FDA). 24 April 2019. "Hiberix". U.S. Food and Drug Administration (FDA). 3 October 2019.