References

1. Fenner F. 1994. Poxviral Zoonoses. In Handbook of Zoonoses Second Edition Section B: Viral. Beran GW, Steele JH, Eds. :485-503. CRC Press, Inc.
2. Breman JG, In: Scheld WM, Craig WA, Hughes JM, eds. Emerging Infections 4. Washington DC: ASM Press. 2000:chap5.
3. Breman JG, Henderson DA. Current concepts: Smallpox diagnosis and management. N Engl J Med, 2002;346:1300-8.[PubMed]

Links

1. CDC
2. WHO
3. Promed