Sílvia Lutucuta, who was speaking at the Aníbal de Melo Press Center (CIAM) in Luanda at the beginning of Thursday night, said that the cases were detected very recently by the National Institute of Health Research.
The minister noted that the epidemiological surveillance system had seen an increase in cases of seasonal flu since last April and, in addition to cases of influenza A, cases of rhinovirus flu (related to colds) were also recorded.
The four cases of influenza A, two in men and two in women, were registered only in the capital.
"There were no deaths, no new cases of contacts having been registered and we are expanding the epidemiological and laboratory investigation", said the minister.
The Ministry of Health, added the official, "activated the contingency and emergency plan for the prevention of influenza A, reinforcing epidemiological and laboratory surveillance of suspected cases of influenza in sentinel health units to monitor the epidemiological evolution of the disease".
The activation of the contingency and emergency plan, explained the minister, aims to guide the assertive response needed to prevent the spread of the disease.
The official also appealed to the population to remain calm, having recommended measures to prevent suspected cases, namely the use of a protective mask, mainly in closed places, washing hands regularly, using alcohol gel and not sharing personal utensils.
She also recalled that influenza A had the greatest spread in the world in 2019, a period in which Angola registered 12 cases, referring to it as a highly contagious disease, with epidemic potential, transmitted from person to person through droplets.
High fever, headache, muscle aches, cough, sore throat and multiple organ failure are some of the symptoms.