👉 Paratyphoid is a type of bacterial infection characterized by inflammation in the intestines. It can cause pain, fever, and abdominal cramps in people with weakened immune systems. Paratyphoid is caused by Streptococcus pyogenes, which is also known as pneumococcus or influenza A virus. Symptoms may include diarrhea, bloating, and a sense of nausea or fullness. Treatment options for paratyphoid include antibiotics to kill the bacteria that cause the infection.