Investigation

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The Emerging and Acute Infectious Disease Guidelines (EAIDG)

• EAID Guidelines 2022 (PDF, 7.9 MB) **UPDATED 2022**

The purpose of this handbook is to provide a centralized resource for outbreak and reportable disease investigations to local and regional health departments in Texas. This handbook is intended as a tool to help local and regional public health staff with their surveillance activities and investigations. Our hope is that this handbook will continue to grow over the years and highlight some of the best investigation practices in the state. Information covers control measures, case definitions, case statuses, laboratory collection/shipping procedures and more. 

List of Individual Chapters: 

Acute Flaccid Myelitis (PDF, 257 KB)

Amebiasis (PDF, 412 KB)

Amebic Meningitis/Encephalitis (PDF, 1.5 MB)

Ascariasis (PDF, 137 KB)

Botulism (PDF, 177 KB)

Campylobacteriosis (PDF, 159 KB)

C. auris (Candida auris) (PDF, 168 KB)

CRE (Carbapenem-resistant Enterobacteriaceae) (PDF, 285 KB)

CRS (Congenital Rubella Syndrome) (PDF, 166 KB)

Cryptosporidiosis (PDF, 151 KB)

Cyclosporiasis (PDF, 146 KB)

Diphtheria (PDF, 144 KB)

Ebola (PDF, 184 KB)

Fascioliasis (PDF, 167 KB)

GAS (Streptococcus pyogenes, Invasive) (PDF, 342 KB)

Gastroenteritis Outbreaks (PDF, 211 KB)

GBS (Group A Streptococcus agalactiae, Invasive) (PDF, 317 KB)

Haemophilus influenzae (PDF, 550 KB)

Hemolytic Uremic Syndrome, post-diarrheal (PDF, 181 KB)

HAV (Hepatitis A virus) (PDF, 245 KB)

HBV (Hepatitis B virus, Acute and Perinatal) (PDF, 285 KB)

HCV (Hepatitis C virus) (PDF, 160 KB)

HEV (Hepatitis E virus) (PDF, 151 KB)

Hookworm (PDF, 135 KB)

Influenza A Novel Variant (PDF, 292 KB)

Influenza Associated Pediatric Mortality (PDF, 241 KB)

Legionellosis (PDF, 364 KB)

Listeriosis (PDF, 221 KB)

MDR-A (Multidrug-resistant Acinetobacter) (PDF, 411 KB) 

Measles (PDF, 898 KB)

Meningococcal Infection, Invasive (PDF, 493 KB)

Mumps (PDF, 484 KB)

Norovirus Outbreaks (PDF, 155 KB)

Novel Coronavirus (PDF, 500 KB) For current  2019 novel coronavirus (2019-nCoV) guidance documents and information please see the DSHS Novel Coronavirus website: /coronavirus/.

Novel Flu (PDF, 478 KB)

Paragonimiasis (PDF, 146 KB)

Pediatric Flu Death (PDF, 436 KB)

Pertussis (PDF, 479 KB)

Polio (PDF, 139 KB)

Rubella (PDF, 186 KB)

Salmonella Paratyphi (PDF, 211 KB)

Salmonellosis (Non-Paratyphi,Non-Typhi) (PDF, 168 KB)

STEC (Shiga toxin-producing Escherichia coli) (PDF, 178 KB)

Shigellosis (PDF, 170 KB)

Streptococcus pneumoniae (PDF, 453 KB)

Tetanus (PDF, 155 KB)

Tick-borne Relapsing Fever (PDF, 145 KB)

Trichuriasis (PDF, 132 KB)

Typhoid Fever (PDF, 167 KB)

Varicella (PDF, 394 KB)

Vibrio Infections including Cholera (PDF, 174 KB)

Viral Hemorrhagic Fever (Non-Ebola) (PDF, 121 KB)

VISA/VRSA (Vancomycin Intermediate Staphylococcus aureus/Vancomycin Resistant Staphylococcus aureus) (PDF, 159 KB)

Yersiniosis (PDF, 152 KB)

Appendix A: Additional Flowcharts and Tables (PDF, 377 KB)

Appendix B: Out of State Exposure Notifications (PDF, 181 KB)

Appendix C: DSHS Laboratory Resources (PDF, 443 KB)

Appendix D: Summary of Updates (PDF, 179 KB)

Appendix E: Additional Resources (PDF, 128 KB)

Appendix F: Acronyms and Abbreviations (PDF, 87 KB)