A COVID-19 family cluster with retinitis pigmentosa and hypogammaglobulinemia.

Hypogammaglobulinemia is a heterogeneous group of innate and acquired antibody deficiency with variable disease severity, recurrent pneumonia, and bronchiectasis. The outcome of COVID in patients with hypogammaglobulinemia is variable depending on age, comorbidities, type of immunodeficiency, and use of immunoglobulins. We report the favorable outcome of two family members diagnosed with -related retinitis pigmentosa and hypogammaglobulinemia syndrome and infected with SARS-CoV-2 following contact with their mother who had COVID-19.

Novel influenza A (H1N1) virus-induced hemophagocytosis: first case reported in Saudi Arabia.

H1N1 is a novel subtype of the influenza A virus. Since its reemergence in 2008, it has been reported to cause a variety of illnesses ranging from mild flu-like symptoms to severe multiorgan failure. We report a case of a young immunocompetent man who presented with progressive shortness of breath and rapidly developed multiorgan dysfunction, including pancytopenia from H1N1 infection during the 2010-2011 influenza season.