Experimental airborne transmission of Streptococcus suis capsular type 2 in pigs. | Semantic Scholar (2024)

FAQs

How is Streptococcus suis transmitted in pigs? ›

Streptococcus suis survives in dust and feces in the usual swine environment. It can be isolated from the nasal cavity and palatine tonsils of many normal pigs. It is present in the feces and nasal secretions of carriers. Transmission may be through ingestion, inhalation or nose-to-nose contact.

Streptococcus suis (S. suis) type 2 (SS2) is an important zoonotic pathogen that causes swine streptococcosis, a widespread infectious disease that occurs in pig production areas worldwide and causes serious economic losses in the pork industry.

The disease most commonly causes meningitis and presents with fever, headache and vomiting. It may also present with skin bleeding and less commonly, sepsis, endocarditis, arthritis, bronchopneumonia and toxic shock syndrome.

Transmission to humans occurs via contamination of skin wounds or mucous membranes by blood or secretions from infected pigs (Western countries, China) or by consuming raw meat or blood (Southeast Asia). The disease is considered to be underdiagnosed and underreported in several countries.

Transmission. Animals are most commonly infected by direct contact with other animals that are carriers of streptococcal bacteria. Piglets may be infected during birth if the sow's birth canal is contaminated.

Group A strep pharyngitis is most commonly spread through direct person-to-person transmission. Typically, transmission occurs through respiratory droplets but can also occur through contact with secretions, such as saliva, wound discharge, or nasal secretions, from an infected person.

Is strep throat contagious? Yes, strep throat is contagious. The illness can spread quickly from person to person in households, classrooms, day care facilities, military training camps and other settings where groups of people are close to one another, particularly where children are present.

Although human infection with S. suis has been occasionally documented in North America (5), the first human case was not reported in the United States until 2006, when a farmer from New York sought treatment for meningitis. The source was an area farm where the patient had recently purchased piglets (6).

A recent systematic review and meta-analysis demonstrated the main risk factors in acquiring S. suis infection including eating raw/undercooked pork, exposure to pigs or raw pork, male sex, and pig-related occupation.

Can Streptococcus go away without antibiotics? ›

Strep throat typically goes away in three to seven days with or without antibiotic treatment. However, if you don't take antibiotics, you can remain contagious for two to three weeks and are at a higher risk for complications, such as rheumatic fever.

Strep infection may lead to inflammatory illnesses, including: Scarlet fever, a streptococcal infection characterized by a prominent rash. Inflammation of the kidney (poststreptococcal glomerulonephritis) Rheumatic fever, a serious inflammatory condition that can affect the heart, joints, nervous system and skin.

Streptococcus suis (S. suis) is a gram-positive bacterial pathogen in pigs which can cause serious infections in human including meningitis, and septicaemia resulting in serious complications.

Human infection caused by S. suis is a rare but life-threatening condition. Epidemic and sporadic human infection cases caused by S. suis serotype 1, 2, 4, 5, 9, 14, 16, 21, 24 and 31 have also been reported in many countries and 17.8% of patients dead [1, 8–10].

Group A Streptococcus (GAS) is a type of bacteria that can cause skin, soft tissue and respiratory tract infections. It is spread from person-to-person through respiratory droplets such as from coughing or sneezing and from touching skin or other surfaces contaminated with bacteria.

Meningitis is a relatively common disease of young pigs whereby infection leads to inflammation of the sacs that surround the brain (meninges) and produce disturbance to the nervous system. The disease is frequently fatal.

Colostrum intake.

Ensure that newborn pigs get about 250 grams of colostrum soon after birth. This will build maternal antibodies and protect the piglet from S. suis and other pathogens.

The first symptom is fever and the anorexia and depressed behavior associated with it. Quickly, affected pigs present signs of meningitis, such as squinting eyes and flattened ears. Depression, paddling, ataxia, nystagmus and head tilts are very often associated with Streptococcus suis infections.