Such a change could mark the start of a global outbreak (a pandemic).

这种变异可能意味着全球暴发(大流行)的开始。

youdao

WHO started the Global Outbreak Alert and Response Network five years ago.

世卫组织于五年前开始运行全球疾病暴发预警和应对网络。

youdao

The WHO's alert level for the virus remains at phase five of six, meaning a global outbreak is imminent.

猪流感病毒在世卫组织的六个警戒级别的仍然在第五级，这意味着马上就要全球爆发。

youdao

Conference organizer, Dr.Greg Pappas of the American non-governmental organization,or NGO, called Interaction says that while it is too early to tell whether the current outbreak will turn into a global pandemic, poorer countries in particular need to be prepared for the day when one does hit.

VOA: standard.2009.04.28

On the bleeding edge of a global outbreak would be travel-related companies such as hotels and airlines, restaurants, mass transportation and nonessential retail shopping.

CNN: Pandemic equals economic pain

Twenty years after the global outbreak of AIDS, no one has developed an effective vaccine against the HIV virus, a far more cunning foe than polio, smallpox or measles.

FORBES: Outsmarting AIDS

Consumer spending was hurt and millions of Chinese dawned facial masks in the spring of 2003 when the country was the epicenter of a global outbreak of severe acute respiratory syndrome, or SARS, that killed several hundred people worldwide.

FORBES: Shanghai Discovers Two More Cases Of Deadly Bird Flu; More Poultry Markets Shut