Smallpox and monkeypox: Looking back and looking ahead.

The monkeypox (mpox) epidemic was declared a global health emergency in July 2022. The mpox virus belongs to the same virus family as the smallpox, or variola virus, but the infection is a less lethal threat than smallpox. Nevertheless, its relationship to smallpox is a worldwide concern, as is the discontinuation of universal smallpox vaccinations since the 1980s. Newer therapies and vaccines are available for both infections, including 2 antiviral drugs that can be used under certain conditions. Two vaccines have been developed for mpox prevention, but clarity is needed on when and how to use them. Preventive public health measures and prioritization of resources for managing infectious disease are concerns.

Severe hepatitis with autoimmune features following a HHV-6: a case report.

HHV-6 has been identified as the aetiologic agent of exanthem subitum in infants and an acute febrile illness in young children. HHV-6 probably remains latent in the body after the primary infection and it reactivates upon host immunosuppression in a manner similar to other human herpes viruses. Primary HHV-6 infection in adults is very rare and it is not clear whether disease manifestations are similar to those observed in children.We report the case of acute hepatitis in a 18-year-old immunocompetent woman presenting with sever jaundice and liver dysfunction. Serum immunoglobulin levels were elevated (3.8 gr/dl) with a titre of anti nucleus antibody of 1:640. Serological data demonstrated the presence of IgM antibodies against human herpesvirus-6 in the serum and of viral DNA on liver biopsy by real time quantitative polymerase chain reaction, with a viral load of 280 genomes/106 of cellular genomes. No other etiologic agents were found to induce hepatitis and the patient was diagnosed as having HHV-6 triggered autoimmune acute hepatitis.