Pertussis vaccine Pertussis vaccine is only given as a part of a combined vaccine. Monovalent pertussis vaccines are not available. Vaccines are stored at +2˚C to +8˚C, protected from light. Excess heat – reduces potency and shelf-life.Excess cold/freezing – increases reactogenicity and loss of potency; it may also cause hairline cracks on the ampoule leading…
Paracoccus yeei is an aerobic Gram-negative coccobacilli typically found in soil and brine. It appears as diplococci and may have a visible vacuole – giving an “O” shaped appearance. It may under-decolourise and appear as Gram-positive cocci. It is oxidase-positive and confused with Moraxella/Neisseria. Identification can be made using automated systems like VITEK-2 GN, MALDI-ToF and DNA…
A GP has called you about a 2-year-old girl. Her mum noticed scratch marks on the girl’s face in the morning. On questioning, Mum told the GP that she noticed a bat in her room but managed to get it out of the room. She doesn’t know how long the bat was there or if…
by Dr Katherine Watson (2016) This article was written in 2016. However, the suggested documents are still very much relevant. Some subjects and links have been updated and new links to replace broken links. Here are some of the resources that I used in preparation for FRCPath part 2, April 2016 Bristol. One of the…
Ibrexafungerp, an enfumafungin derivative, belongs to a new family called triterpenoid antifungals.This is a new class called “-fungerp”. This antifungal class inhibits glucan synthetase required for fungal cell wall synthesis. One of the major antifungal class echinocandins also acts by this mechanism and has been used since 2001. Echinocandins, however, have poor bioavailability and are…
Introduction There are various types of E coli that live in the environment and our intestines. Although most live inside our bowel harmlessly and even be beneficial, some E coli may cause infection, like UTI, bacteraemia, gastroenteritis etc. The E coli causing gastroenteritis could be divided into six phenotypes – Shiga toxin-producing E. coli (STEC) [or EHEC/VTEC]…
Nature: Small (Mol weight – 138) phosphoenolpyruvate analogue manufactured synthetically but originally obtained from Streptomyces fradiae and some Pseudomonas sp.A broad-spectrum, a bactericidal antibiotic. Mechanism of action: Inhibit bacterial cell wall formation at a very early stage by inactivating enol pyruvate transferase (MurA).MurA catalyzes the transfer of enolpyruvate from phosphoenolphyruvate to uridine diphospho-N-acetylglucosamine (UNAG), the first step…
