Laboratory Medicine Foundation award

9am – 9.30am BST, 10 June 2026 ‐ 30 mins

Plenary

Chair, Katharine Hayden

Laboratory Medicine Foundation award lecture, Dr Tim Wreghitt (OBE)

I have been a Consultant Clinical Scientist Virologist for 50 years. In that period, there have been extraordinary advances in diagnostic techniques and the availability of antiviral drugs, which have revolutionised clinical practice and improved outcomes.

I will set out the advances in diagnostic virology techniques over the last 50 years and explain how they have enabled better clinical care. Many important viruses such as HIV, HCV, HEV, Covid and Noroviruses were not known about 50 years ago.
Serology and virus growth in cell cultures used to be the mainstay of clinical viral diagnosis. Although the serological techniques were relatively insensitive, they often served their purpose (eg detecting Hepatitis B infection in renal dialysis patients).

In 1976, the most commonly performed tests were for rubella immunity in pregnant women and examining paired serum samples for evidence of respiratory virus infections. The large demand for rubella immunity tests has almost been made redundant by the introduction of MMR vaccine and respiratory virus infections are now detected by means of molecular tests, which can provide more timely evidence of acute infection, facilitating early antiviral treatment for influenza and having a significant impact on infection control practices.

There have been some drawbacks with the introduction of molecular testing instead of cell culture and electron microscopy, especially with respect to enterovirus epidemiology. Currently, Clinical Virology laboratories test for generic enterovirus RNA. In 1976, we could perform neutralisation tests in cell culture to type specific enteroviruses, which was beneficial for outbreak management in hospitals. Although electron microscopy was very expensive and relatively insensitive, it was very useful for rapid diagnosis of varicella-zoster virus infections, greatly aiding infection control interventions. My personal record for taking a vesicle fluid swab in Addenbrooke’s ICU, to seeing herpes viruses in the EM and telephoning the report is 6 minutes!