Tuesday, October 16, 2018

What is epidemic typhus?

What is epidemic typhus?
What is epidemic typhus?
Epidemic typhus, also known as typhus typhus or "typical typhus", may occur after several months to several years after epidemic typhus, known as recurrent typhus, also known as Brill-Zinsser disease. It is an acute infectious disease transmitted by Platts rickettsia through body lice. The clinical features of epidemic typhus are persistent high fever, headache, rash-like rash (or maculopapular rash) and central nervous system symptoms. The natural course is 2 to 3 weeks. Rickettsia was discovered in 1910 by Ricketts in the blood of patients with typhus. In 1913, Prowazekii also found pathogens from patients with neutrophils; both of them were sacrificing typhus. To commemorate them, the pathogen of epidemic typhus was named as Platts.

Clinical manifestations of epidemic typhus

Epidemic typhus can be divided into two types, typical and light, and recurrent typhus.

1. Typical epidemic typhus incubation period is 5 to 21 days, with an average of 10 to 12 days. A small number of patients have prodromal symptoms of 2 to 3 days, such as fatigue, headache, dizziness, chills, and low fever. Most of the onset of illness, accompanied by chills, severe and persistent headache, muscle pain in the body, conjunctiva and facial congestion.

What is the rickettsial infection?

What is the rickettsial infection?
What is the rickettsial infection?
Rickettsiosis is a natural epidemic infection caused by a group of rickettsia. Human rickettsial diseases can be divided into 5 groups:

  • Typhus group (including epidemic typhus and endemic typhus);
  • Spot fever group (including spot fever, Marseille fever, Australian rash typhus, rickett body pox);
  • locust fever group (including tsutsugamushi disease);
  • Q heat group (including Q heat);
  • Paroxysmal rickettsial disease group (including war sputum fever). Epidemic typhus, endemic typhus, mites fever and Q fever have been found.


Rickettsia is a microbe between bacteria and viruses and has the following characteristics:

What is cytomegalovirus infection? What are the manifestations, causes, symptoms, diagnosis, treatment, and prevention of cytomegalovirus infection?

What is cytomegalovirus infection? What are the manifestations, causes, symptoms, diagnosis, treatment, and prevention of cytomegalovirus infection?
What is cytomegalovirus infection? What are the manifestations, causes, symptoms, diagnosis, treatment, and prevention of cytomegalovirus infection?
Cytomegalovirus (CMV) infection is very common in the human population, but most people do not have symptoms. This condition is called "invisible infection" of cytomegalovirus and generally does not require treatment. The opposite of "invisible infection" is "dominant infection", which is the obvious disease and symptoms after infection with cytomegalovirus. The most common disease caused by cytomegalovirus is "mononucleosis", which can be expressed as fever, fatigue, limb pain, sore throat, neck mass (neck lymph node enlargement). The treatment of ganciclovir is very effective.

What is the performance of cytomegalovirus infection?

  • Adults. Common symptoms caused by adult cytomegalovirus infection, similar to infectious mononucleosis (caused by EB virus infection), often manifest as fever, fatigue, and some patients can touch a small mass (neck lymph nodes) in the neck. Occasionally, gastrointestinal manifestations, such as diarrhea, abdominal pain, bloody stools or black hair, there are some other rare types of performance.
  • Children. The symptoms of cytomegalovirus infection in children are more prominent. Neonates with congenital infections are mostly asymptomatic at birth, and some will experience hearing loss gradually; about 10% will have performance at birth, such as low body weight, hepatosplenomegaly, bleeding spots on the skin and jaundice, and possibly Small head, epilepsy, feeding difficulties, eye abnormalities, deafness, etc. Children who are exposed to cytomegalovirus, such as vaginal secretions and milk, are usually asymptomatic after birth, and may have temporary infection symptoms, which have no effect on growth and development. Healthy children are also asymptomatic in getting infections in kindergartens and other environments. About 10% will show signs of mononucleosis, such as fever, fatigue, sore throat, and enlarged lymph nodes in the neck. 
  • Those with impaired immune function. Those with impaired immune function are more likely to develop severe symptoms, such as hepatitis and colitis in liver transplant recipients; pneumonia is most common in lung transplant recipients and bone marrow transplant recipients.


What are the hazards of neonatal cytomegalovirus infection?
Intrauterine infection in pregnant women can lead to fetal abortion, stillbirth, and birth defects. In severe cases, there will be systemic infections, such as jaundice with hepatosplenomegaly, intrauterine growth retardation syndrome, microcephaly, thrombocytopenia, intracranial calcification, and deafness. Combined pneumonia can lead to respiratory failure, which can lead to liver failure and can all die.

Can cytomegalovirus infection cause death?
A small number of children with congenital infections have serious symptoms and even life-threatening. Even if they receive anti-viral treatment and intensive care, they may die in a short period of time. Children with congenital infections (symptomatic and asymptomatic) have an overall mortality rate of 4% to 8% within 1 year of birth. Most babies die from virus-associated hemophagocytic syndrome, or various severe organ failures.

Does congenital cytomegalovirus infection affect your baby's growth and mental development?
possible. Among the surviving children, there may be various neurological sequelae such as microcephaly, mental retardation, cerebral palsy, and hearing impairment. In asymptomatic children, although the risk is lower than that of symptomatic children, neurological dysplasia may occur later.


Will cytomegalovirus infection be transmitted to children through mom?
meeting. Newborns and babies may develop intrauterine infection with cytomegalovirus during maternal viremia, cytomegalovirus when exposed to birth canal secretions, or breast milk infection after birth.

How is cytomegalovirus transmitted?
Cytomegalovirus can be detected in various body fluids, including urine, blood, semen, cervix, feces, tears, and breast milk. It can be transmitted in a variety of ways, including sexual contact transmission, blood transmission, close living (exposure to viruses from the respiratory tract and urine), and mother-to-child transmission.

Which populations are more prone to cytomegalovirus infection?
Everyone can be exposed to and infected, but most people do not have symptoms. People with low immune system function, such as patients who have undergone organ transplantation, AIDS patients, long-term hospitalization, premature infants, etc., are more likely to cause serious symptoms and even life-threatening after infection with cytomegalovirus.


What tests may be needed to suspect a cytomegalovirus infection?
Blood routine, stool routine, liver function, antibody testing, etc.

What diseases can cytomegalovirus infection be confused with?
In normal adults, cytomegalovirus infection is similar to infectious mononucleosis caused by EB virus infection and needs to be identified.


Which department does cytomegalovirus infection generally go to?
In the Department of Infectious Diseases, children can also see pediatrics.

How to treat cytomegalovirus infection? How long does it take to treat?

  • Asymptomatic without treatment. 
  • Patients with normal immune function are usually self-limiting even if they have symptoms. They can recover on their own within a few days to several weeks without anti-viral treatment. 
  • Anti-viral drugs such as ganciclovir may be used in patients with impaired immune function, depending on the patient's response to the drug.


What kind of medicine do patients with cytomegalovirus infection need? What are the common side effects of drugs?
The main treatment is ganciclovir, which is safer.

Can cytomegalovirus infection be completely cured?
In patients with normal immune-positive cells, many can heal without treatment, and some patients who require anti-viral treatment can achieve good results after standard treatment. Only children with congenital cytomegalovirus with severe symptoms and diseases are more likely to die.


What should I do if I find a cytomegalovirus infection during pregnancy?
Pregnant women find new cytomegalovirus infections early in pregnancy. Because of the high probability of intrauterine infection and serious consequences, it is recommended to stop pregnancy. If a new cytomegalovirus infection occurs in the middle and late stages of pregnancy, it is necessary to closely observe whether the fetus is deformed.

What should be paid attention to in life and diet for patients with cytomegalovirus infection?
Regardless of symptoms, the following points should be noted:

  • Avoid kissing the lower lip and lip area of ​​young children and children; 
  • Do not share cutlery, drinking utensils, drinks or food with smaller children or young children;
  • Wash the nose, saliva and diapers, wash hands carefully, or use gloves; 
  • If cytomegalovirus mononucleosis has been diagnosed, then during the contagion period (saliva, genital secretions) Or active virus in semen) should avoid intimate contact with sexual partners (especially pregnant women).


How to prevent cytomegalovirus infection?
Asymptomatic infections are very common and difficult to prevent, and the vaccine is still in trial. There is also a lack of valuable programs for maternal and child blockade, focusing on prenatal care, early detection and corresponding treatment.

What is AIDS? What are the symptoms, routes of transmission, diagnosis, treatment, and prevention of AIDS?

What is AIDS? What are the symptoms, routes of transmission, diagnosis, treatment, and prevention of AIDS?
What is AIDS? What are the symptoms, routes of transmission, diagnosis, treatment, and prevention of AIDS?
What is AIDS?
AIDS is a transliterated disease name. Its full name is "acquired immunodeficiency syndrome". The first capital letter of each word in English name is called "AIDS". Transliteration is what we often call "AIDS".  It is a human infectious immunodeficiency virus, a chronic infectious disease caused by HIV, which we often say. HIV invades the body's immune system, causing the body's immune function to decline or even be lost, eventually leading to serious infection or tumor death.

How long does it take for AIDS to go from infection to morbidity?
The incubation period averages nine years, which can be as short as several months and as long as 15 years. The length of the incubation period is related to a variety of factors: such as the route of infection, the number of infected viruses, the genotype of the virus, and the physical fitness of the infected person. This process is the process of the human body fighting the virus. The upper hand, the symptoms of AIDS will be manifested.

What is infectious mononucleosis? What are the symptoms, causes, diagnosis, treatment, and prevention of infectious mononucleosis?

What is infectious mononucleosis? What are the symptoms, causes, diagnosis, treatment, and prevention of infectious mononucleosis?
What is infectious mononucleosis? What are the symptoms, causes, diagnosis, treatment, and prevention of infectious mononucleosis?
What is infectious mononucleosis?
 Infectious mononucleosis is an acute disease caused by EB virus infection. Mainly manifested as fever, sore throat, lymph nodes and hepatosplenomegaly (to be known by doctors), peripheral blood showed atypical lymphocytes (to check blood to know). In addition, infectious mononucleosis may also affect some internal organs, such as liver, spleen, heart, brain, kidney, lung, pancreas, etc., causing complications of related organs, such as meningitis, myocarditis, anemia. Is infectious mononucleosis common? More common, and there is a trend of increasing year by year. How to treat infectious mononucleosis? Is it a very serious disease? Although there is no specific drug that can eliminate EB virus, the body's own immune system can eliminate the virus, so patients with infectious mononucleosis can recover. However, in a few cases, if complications occur in infectious mononucleosis, it may threaten the vital organs of the body and even lead to death. In general, most people can recover as long as they are discovered early and actively treated.


What are the symptoms of the infectious mononucleosis incubation period?
The incubation period is the time from infection to the onset of symptoms.

What is dengue fever? What are the symptoms, causes, diagnosis, treatment and prevention methods of dengue fever?

What is dengue fever? What are the symptoms, causes, diagnosis, treatment and prevention methods of dengue fever?
What is dengue fever? What are the symptoms, causes, diagnosis, treatment and prevention methods of dengue fever?

What is dengue fever?
Acute infectious diseases caused by dengue virus. · High fever, rash, bone and joint pain are typical symptoms. Reducing mosquito bites can effectively prevent the disease.

What are the symptoms of dengue fever?
Typical dengue fever is divided into three phases: acute fever, extreme phase and recovery phase. The main symptoms of each phase are:

Acute fever: acute onset, can be accompanied by chills, body temperature can reach 40 °C within 24 hours, may be associated with headache, muscle and joint pain, fatigue, nausea, vomiting, abdominal pain, diarrhea and other gastrointestinal symptoms. On the 3rd to 6th day after the onset, congestive rash or spotted hemorrhagic rash appeared on the face and limbs, and there were also different degrees of bleeding, such as subcutaneous hemorrhage, ecchymosis at the injection site, bleeding gums, and bleeding.

What is hemorrhagic fever with renal syndrome? What are the clinical manifestations, complications, routes of transmission, examination and treatment of hemorrhagic fever with renal syndrome?

What is hemorrhagic fever with renal syndrome? What are the clinical manifestations, complications, routes of transmission, examination and treatment of hemorrhagic fever with renal syndrome?
What is hemorrhagic fever with renal syndrome? What are the clinical manifestations, complications, routes of transmission, examination and treatment of hemorrhagic fever with renal syndrome?
What is hemorrhagic fever with renal syndrome?
Hemorrhagic fever with renal syndrome, also known as epidemic hemorrhagic fever, is a natural epidemic disease caused by the epidemic hemorrhagic fever virus (also known as Hantavirus), which uses murine as the main source of infection. Mainly manifested as fever, hemorrhage, congestion, hypotension shock and kidney damage.

Why is the epidemic hemorrhagic fever renamed hemorrhagic fever with renal syndrome?
Epidemic hemorrhagic fever in different countries and regions, due to its different pathogens, epidemiology and clinical characteristics, there have been many names, such as "epidemic hemorrhagic fever" in China and Japan; North Korea called "North Korean hemorrhagic fever" The Soviet Union called it "hemorrhagic nephritis and kidney disease". In fact, all epidemic hemorrhagic fever has varying degrees of kidney damage, so in 1982 the World Health Organization (WHO) unified it as "renal syndrome hemorrhagic fever (HFRS)."

What is the incubation period? How long is the incubation period for hemorrhagic fever with renal syndrome?
The incubation period is the period from when the pathogen invades the human body to when clinical symptoms begin to appear. The incubation period for hemorrhagic fever with renal syndrome is usually 2 to 3 weeks.