Serogroup C capsule expression during carriage may contribute to the invasive character of ST-11 complex meningococci and to the high efficacy of meningococcal serogroup C conjugate polysaccharide vaccine.

Molecular genetic analysis of the cases described here suggests that the observed occurrence of cowpox virus infection among human beings and pet rats in multiple geographical areas represents a unitary epidemiological event that has not yet come under control. Further cases can be expected.

We describe a 43-year old patient with Covid-19 who developed a bullous hemorrhagic rash that progressed to necrotic lesions. Histopathology confirmed a vasculitis of small and medium-sized cutaneous vessels.

No abstract