So far, reinfection seems to be rare - there have been only a few examples out of more than 37 million confirmed cases. Reports in Hong Kong, Belgium and the Netherlands said they were no more ...

COVID symptoms can be mild, severe, or nonexistent, according to the CDC—and can appear as late as two weeks after you’ve ...

His case is the first confirmed account of SARS-CoV-2 reinfection. The fact that some people can be reinfected with the virus is “not a huge shock,” says Paul Bieniasz, a virologist at the ...

罗纳德·罗斯因发现鸟类疟原虫的生命周期而获得诺贝尔奖，他没有在人类中建立他的疟疾传播概念，而是在鸟类中。罗斯是第一个证明疟疾寄生虫是通过受感染的蚊子叮咬传播的，在他的案例中是禽疟原虫。1897 年，意大利医生和动物学家乔瓦尼·格拉西和他的同事们确定了疟原虫在按蚊体内的发育阶段；第二年描述了恶性疟原虫、间日疟原虫和疟疾疟原虫的完整生命周期。

A new study highlights the role of natural killer T cells in influencing the immune response to dengue virus, potentially reducing the severity of subsequent infections.

Jynneos, developed in 2019 by Bavarian Nordic, is supposed to be administered as two doses given 28 days apart. A live ...

Opens in a new tab or window Among injection drug users treated for hepatitis C virus (HCV) infection, rates of reinfection were high soon after sustained virologic response but decreased with ...

They say genome sequencing shows the two strains of the virus are "clearly different", making it the world's first proven case of reinfection. The World Health Organization warns it is important ...

Vietnam Vaccine Joint Stock Company (VNVC) on Friday launched the mass vaccination against dengue fever using vaccine Qdenga ...