Diagnosis

This article provides an in-depth, reader-friendly overview of primary syphilis, focusing on the characteristic yet frequently overlooked manifestation of the disease—the painless chancre. Through narrative examples and symptom comparisons, it explains how the absence of pain or dramatic signs enables early syphilis to spread unnoticed during sexual contact.

This information sheet  provides a comprehensive overview of tuberculosis (TB), an infectious disease caused by Mycobacterium tuberculosis that primarily affects the lungs but can involve other parts of the body. It distinguishes between Latent TB Infection (LTBI), which is asymptomatic and non-infectious, and active TB disease, which can be pulmonary (infectious) or extrapulmonary (non-infectious).

Recent weeks have seen a handful of new Tuberculosis (TB) cases reported in states including Maine, North Carolina and California. While TB is rare in the U.S., even a single active case warrants attention. This article provides an overview of what TB is & how it spreads. TB is caused by a bacterium (Mycobacterium tuberculosis) that typically attacks the lungs, forming lesions called “tubercles,” and can destroy lung tissue — severe disease can lead to respiratory failure.

This article reviews key clinical and public health considerations surrounding recent tuberculosis (TB) cases reported in Maine, North Carolina, and California. Although TB remains relatively rare in the United States, it continues to cause more than 1 million deaths annually worldwide and poses ongoing risks, particularly for individuals with weakened immune systems or those who live or work in congregate settings.

This information sheet outlines how individuals can take a two‑pill (200 mg) dose of doxycycline within 24–72 hours after condomless oral, anal, or vaginal sex to significantly reduce the risk of syphilis, gonorrhea, and chlamydia. It provides clear dosing instructions, timing guidance, and encourages regular STI screening and care coordination.

This webpage explains Assembly Bill 2132, which mandates tuberculosis (TB) risk assessment and testing for adult primary care patients in California.

This information sheet provides essential insights into Hepatitis D, emphasizing its dependence on Hepatitis B for infection. The sheet underscores prevention strategies, notably the protective role of the Hepatitis B vaccine, and highlights the need for awareness among high-risk groups to prevent severe liver complications.

This information sheet provides essential insights into Hepatitis C, detailing its transmission, symptoms, and the importance of early detection. It emphasizes the availability of effective treatments that can cure the infection, highlighting the need for regular testing and awareness to prevent long-term liver complications.

This information sheet highlights key facts about Hepatitis B, including how it spreads, who is at risk, and steps for prevention and treatment. It emphasizes the importance of vaccination, routine testing, and early care to reduce transmission and prevent long-term liver damage.

This information sheet offers essential insights into Hepatitis C, detailing its transmission through blood-to-blood contact, common symptoms, and the significance of early detection. The sheet underscores the importance of testing, highlights that treatment is accessible regardless of drug use status, and provides resources for prevention and care.