Primary herpes simplex virus (HSV) infection is first infection with either herpes simplex virus-1 (HSV-1) or herpes simplex virus-2 (HSV-2) in individuals who do not have antibodies to either HSV-1 or HSV-2.
First episode-non primary infection is infection with either HSV-1 or HSV-2 in individuals who have previously existing antibodies against HSV-1 or HSV-2 respectively.
Recurrent HSV infection results from reactivation of latent virus. It is usually brought about by triggering factors eg UV light, immunosuppression.
Orolabial HSV disease is mostly caused by HSV-1 that occurs most commonly in children <5 years of age. It is transmitted through close contact with individuals who have active viral shedding.
Genital HSV disease is caused by HSV-2 that is the usual cause of herpes genitalis. It typically occurs in adults and transmitted through sexual contact.
Use of standard-dose aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs) appears to confer protection against the risk of endometrial cancer in overweight and obese women, according to a meta-analysis.
Less than 15 percent of Singaporean adolescents get the recommended 8–10 hours of sleep on a school night, reports a recent study, noting that such short sleep duration is linked to symptoms of depression, overweight or obesity, and poorer self-rated health.
Obstructive sleep apnoea may increase the risk of male-pattern baldness in men with a family history of hair loss, and this association appears to be mediated by low serum transferrin saturation levels related to hypoxia, a study suggests.