TOKYO, Aug 17 (Reuters) - The New Zealand dollar tumbled on Tuesday after the country discovered its first community case of COVID-19 in six months while the Australian dollar slipped to a one-month low as minutes from the central bank meeting were perceived as dovish. Safe-haven currencies such as the yen held firm against riskier currencies also on growing anxiety the spreading Delta variant of the coronavirus could disrupt, if not derail, the global economic recovery from the pandemic. The New Zealand dollar fell 0.7% to $0.6972 after the virus-free country found a community outbreak of COVID-19 for the first time since February. read more The news came just a day before the country"s central bank, the Reserve Bank of New Zealand (RBNZ), is widely expected to become the first among developed countries to raise interest rates since the pandemic as its economy booms. While analysts still expect the RBNZ to go ahead with a 25 basis point rate hike on Wednesday, the currency"s overnight indexed swaps showed implied probabilities of a rate hike fell below 90% from more than 100% priced in before the news. The Australian dollar lost 0.4% to $0.7308 after the minutes from the Australian central bank"s last policy meeting were perceived to be more dovish than some had anticipated. The minutes showed the Reserve Bank of Australia (RBA), which surprised markets by sticking to its plan to start tapering bond buying, would be prepared to take policy action, should coronavirus lockdowns across the country threaten a deeper economic setback. read more "The minutes seem to be in line with what Governor (Philip) Lowe has said earlier but perhaps markets reacted to headlines like the outlook is highly uncertain," said Teppei Ino, senior currency analyst at MUFG Bank. Risk-averse sentiment was rising also as weak economic data from the United States and China over the last few days has stoked worries the spread of Delta variant could lead to a slower global recovery. The New York Federal Reserve"s barometer of manufacturing business activity, released on Monday, declined more than expected in August while the University of Michigan"s survey on Friday showing U.S. consumer sentiment dropped sharply in early August to its lowest level in a decade. read more In China, data published on Monday showed July retail sales, industrial production and fixed asset investment were all weaker than expected as the latest COVID-19 outbreak weighed on the world"s second-biggest economy. read more "Soft U.S. data could well prove transitory but at the moment more people are turning cautious and thus likely to reduce risk in their positions, rather than taking on more risks," said Kazushige Kaida, head of FX sales at State Street Bank"s Tokyo branch. As investors tried to reduce risk, so-called safe-haven currencies, such as the yen and the Swiss franc, gained a boost. The yen has risen to around 109.28 yen per dollar , holding on to gains of about 1% made over the past two sessions until Monday. Against the euro, the yen stood at 128.62 per euro , having hit a near five-month high of 128.50 yen on Monday. The Swiss franc also held on to latest gains at 0.9133 franc per dollar . On the euro, it stood at 1.0745 franc to the euro , staying near its nine-month high of 1.0720 set earlier this month. The U.S. dollar, which is also often seen as the ultimate safe-haven currency, held firm against many other rivals, including the euro and most other currencies. The euro eased slightly to $1.1785 , losing steam after hitting a one-week high of $1.18045 on Friday. In cryptocurrencies, bitcoin traded at $46,449 , not far from Saturday"s three-month high of $48,190. Ether stood at $3,195 . Reporting by Hideyuki Sano. Editing by Gerry Doyle and Lincoln Feast. Our Standards: The Thomson Reuters Trust Principles.