by Dr. Gabriel M. Freitas | 09/11/2025 | Infectious Diseases
Hepatitis B is a viral infection that affects the liver and can present as either acute or chronic. Caused by the hepatitis B virus (HBV), this condition is considered one of the major global public health concerns due to its high transmission rate and potential...
by Dr. Gabriel M. Freitas | 09/02/2025 | Infectious Diseases
Hepatitis A is a viral infection that affects the liver and, although generally considered a milder form of hepatitis, it can cause major concern when outbreaks occur in populations. The disease is transmitted mainly through the ingestion of contaminated water or food...
by Dr. Gabriel M. Freitas | 08/07/2025 | Infectious Diseases
Chickenpox, also known as varicella, is a highly contagious infectious disease caused by the varicella-zoster virus. Although it is most common in childhood, it can also affect teenagers and adults who have never been exposed to the virus or vaccinated. While...
by Dr. Gabriel M. Freitas | 07/09/2025 | Infectious Diseases
Rabies is an extremely serious viral infectious disease that affects the central nervous system of mammals, including humans. Caused by a virus from the Lyssavirus genus, the infection is almost always fatal once clinical symptoms appear. That’s why prevention and...
by Dr. Gabriel Freitas | 06/10/2025 | Infectious Diseases
Dengue is a viral disease transmitted by the bite of the Aedes aegypti mosquito, common in tropical and subtropical regions such as Brazil. In recent years, dengue has become one of the main public health concerns, with frequent outbreaks and an increase in severe...
by Dr. Gabriel Freitas | 04/12/2025 | Infectious Diseases
Recently, the American network NBC News reported the second death caused by measles in the state of Texas, USA. The victim was a child under five years old. This case raises an international alert about the growing risk of the disease, which a few years ago was...