| cdc.gov | US - - Centers for Disease Control and Prevention (CDC) |
| who.int | International Travel and Health |
| isid.org | International Society for Infectious Diseases |
| scot.nhs.uk | Scottish Centre for Infection and Environmental Health |
| state.gov | Bureau of Consular Affairs, U.S. State Department |
| wms.org | Wilderness Medical Society |
| tripprep.com | Travel Health Online |
| travmed.com | Travel Medicine |
| tmvc.com.au | Travellers Medical And Vaccination Centre - Excellence In Travel Medicine |
| paho.org | Pan American Health Organization (PAHO) |
| tmvc.com.au | www.tmvc.com.au/ |
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