Olga Wong, Kristen Cheung, Theodora Yu Hong Kong has issued a red travel alert for the Democratic Republic of Congo asEbolaoutbreaks escalate in Central Africa, with at least 139 suspected deaths from the disease reported. The red alert - the middle level in a three-tier outbound travel alert system under the Security Bureau - means residents travelling to the country should adjust their plans and avoid non-essential travel due to the significant threat there.