Dr. Nicholaos C Bellos MD

Acquired immunodeficiency syndrome, or AIDS, is a serious secondary immunodeficiency disorder. AIDS is caused by human immunodeficiency virus (HIV). There is progressive destruction of cell-mediated (T cell) immunity. Also, both conditions are characterized by subsequent effects on humoral immunity...

Lyme disease is an infectious disease caused by a bacterium called as Borrelia burgdorferi. It is transmitted to humans via a common tick after feeding on human blood. In most affected individuals, the disease is acute, which is only lasting for a short period of time. But for the rest, the bacteria...

What is Zika virus?Zika virus (Flavivirus) isn`t a new virus, initially, it was found in Uganda and called after the place where the virus was first detected- Zika forest (1947). It is a mosquito-borne virus, which is transmitted from a particular species of infected insects (Aedes), the aggressive...

Lyme’s disease is acquired from the deer ticks which act as its host. The main cause, though, is a bacteria of the Borrelia type that is found in the tick saliva, and then transferred to humans whenever the tick bites.How do you contract Lyme disease?Deer ticks come in contact with humans in the...

Pneumocystis carinii pneumonia (PCP) is a very serious disease, which is characterized by a fluid buildup and inflammation in the lungs. This lung infection is caused by the fungus Pneumocystis jiroveci. It is an opportunistic disease that usually infects immunosuppressed individuals, especially...

You've probably heard stories of people who have died of meningitis, or you've heard that contracting it is as simple as kissing someone with the infection. However, being aware of what is fact and what is fiction is important. Below are some of the myths about meningitis and their truths. ...