Dr Machin has interests in clinical microbiology and clinical virology. In particular, he has expertise in the diagnosis and management of viral infections in sexual health, solid organ and haematological transplant and critically ill patients. Additionally, in the diagnosis and management of emerging viral infections, having been involved in the recent COVID-19 pandemic and Monkeypox outbreak. He has a specialist interest in infection prevention and control of viral infections in hospital settings.

Infection & infectious diseases • Hospital-acquired infection • Travel & tropical medicine • All vaccinations • Especially: AIDS/HIV, Campylobacter, Clostridium difficile , COVID-19, encephalitis, Escherichia coli O157, food poisoning, gastroenteritis, immunisations, Legionnaire's disease, leishmaniasis, leptospirosis, life expectancy, listeriosis, Lyme disease, malaria, meningitis, monkeypox, MRSA, norovirus, Q fever, sepsis, septic shock, swine flu, toxoplasmosis, typhoid fever, tuberculosis

Vulval, vaginal, cervical, uterine, tubal, ovarian, peritoneal cancer • Abnormal smears • Abnormal menstrual bleeding/periods • Endometriosis • Pelvic inflammatory disease • Sexually transmitted infections • Sexual offences in women • Post-operative complications arising from surgery for gynaecological problems • Post-operative complications arising from surgery for abnormally invasive placenta • Robotic surgery

Main clinical interests lie within general practice and women’s and sexual health medicine.

Sexually transmitted infections • Gonorrhoea • Chlamydia • Genital warts • Pelvic inflammatory disease • Syphilis • Pubic lice • Genital candida • Bacterial vaginosis • Urethritis • Trichomonas vaginalis • Genital herpes • Prostatitis • Balanitis • HIV & AIDS • Genitourinary medicine